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Earth From Mars

title	Earth From Mars
date	03.08.2004
description	This is the first image ever taken of Earth from the surface of a planet beyond the Moon. It was taken by the Mars Exploration Rover Spirit one hour before sunrise on the 63rd Martian day, or sol, of its mission. The image is a mosaic of images taken by the rover's navigation camera showing a broad view of the sky, and an image taken by the rover's panoramic camera of Earth. The contrast in the panoramic camera image was increased two times to make Earth easier to see.The inset shows a combination of four panoramic camera images zoomed in on Earth. The arrow points to Earth. Earth was too faint to be detected in images taken with the panoramic camera's color filters. Image Credit: NASA/JPL/Cornell/Texas A&M

Ulysses Leaves Earth

title	Ulysses Leaves Earth
description	An artist's impression of the Ulysses spacecraft mated with its solid rocket booster drifting away from the Space Shuttle Discovery. The booster was used to push Ulysses out of Earth orbit towards Jupiter. Ulysses used Jupiter's gravity to hurl it into an orbit that takes it over the Sun's polar regions, an area not visible to Earth-based observers. Image Credit: Boeing, NASA and European Space Agency

First Picture of the Earth and Moon in a Single Frame

First Picture of the Earth a …

Title	First Picture of the Earth and Moon in a Single Frame
Full Description	This picture of the Earth and Moon in a single frame, the first of its kind ever taken by a spacecraft, was recorded September 18, 1977, but NASAs Voyager 1 when it was 7.25 million miles (11.66 million kilometers) from Earth. The moon is at the top of the picture and beyond the Earth as viewed by Voyager. In the picture are eastern Asia, the western Pacific Ocean and part of the Arctic. Voyager 1 was directly above Mt. Everest (on the night side of the planet at 25 degrees north latitude) when the picture was taken. The photo was made from three images taken through color filters, then processed by the Image Processing Lab at Jet Propulsion Laboratory (JPL). Because the Earth is many times brighter than the Moon, the Moon was artificially brightened by a factor of three relative to the Earth by computer enhancement so that both bodies would show clearly in the prints. Voyager 1 was launched September 5, 1977 and Voyager 2 on August 20, 1977. JPL is responsible for the Voyager mission.
Date	09/18/1977
NASA Center	Jet Propulsion Laboratory

The Earth-Moon System

title	The Earth-Moon System
date	12.16.1992
description	Eight days after its final encounter with the Earth, the Galileo spacecraft looked back and captured this remarkable view of the Earth and Moon. The image was taken from a distance of about 6.2 million kilometers (3.9 million miles). The picture was constructed from images taken through the violet, red, and 1.0-micron infrared filters. The Moon is in the foreground, moving from left to right. The brightly-colored Earth contrasts strongly with the Moon, which reflects only about one-third as much sunlight as the Earth. Contrast and color have been computer-enhanced for both objects to improve visibility. Antarctica is visible through clouds (bottom). The Moon's far side is seen, the shadowy indentation in the dawn terminator is the south pole Aitken Basin, one of the largest and oldest lunar impact features. Image Credit: NASA

Earth and the Sun

title	Earth and the Sun
description	This illustration shows the approximate size of Earth compared to the Sun. The giant coronal mass ejection in the image blasted off the Sun in October 2003. The image was taken by the international SOHO spacecraft. Image Credit: NASA and European Space Agency

First View of Earth from Moo …

title	First View of Earth from Moon
date	08.23.1966
description	The world's first view of Earth taken by a spacecraft from the vicinity of the Moon. The photo was transmitted to Earth by the United States Lunar Orbiter I and received at the NASA tracking station at Robledo De Chavela near Madrid, Spain. This crescent of the Earth was photographed August 23, 1966 at 16:35 GMT when the spacecraft was on its 16th orbit and just about to pass behind the Moon. Image Credit: NASA

Leaving Earth Orbit

title	Leaving Earth Orbit
description	The Galileo spacecraft atop its two-stage Inertial Upper Stage has just been released from the space shuttle in this artist's rendering. Galileo was launched to Jupiter in October 1989 from the Space Shuttle Atlantis. Image Credit: NASA

The Earth and Moon

Title	The Earth and Moon
Full Description	During its flight, the Galileo spacecraft returned images of the Earth and Moon. Separate images of the Earth and Moon were combined to generate this view. The Galileo spacecraft took the images in 1992 on its way to explore the Jupiter system in 1995-97. The image shows a partial view of the Earth centered on the Pacific Ocean about latitude 20 degrees south. The west coast of South America can be observed as well as the Caribbean, swirling white cloud patterns indicate storms in the southeast Pacific. The distinct bright ray crater at the bottom of the Moon is the Tycho impact basin. The lunar dark areas are lava rock filled impact basins. This picture contains same scale and relative color/albedo images of the Earth and Moon. False colors via use of the 1-micron filter as red, 727-nm filter as green, and violet filter as blue. The Galileo project is managed for NASA's Office of Space Science by the Jet Propulsion Laboratory.
Date	01/02/1990
NASA Center	Jet Propulsion Laboratory

Earth's San Andreas Fault

title	Earth's San Andreas Fault
date	02.11.2000
description	The Earth's surface is broken. Cracks in the Earth's crust known as faults can run for hundreds of kilometers. These faults are frequently the sites of major earthquakes as the tectonic plates that cover the surface of the Earth shift. Pictured above is San Andreas Fault in California, one of the longest and most active faults. Visible as the linear feature to the right of the mountains, San Andreas Fault reaches 15 kilometers deep and is about 20 million years old. The above exaggerated-height image was created by combining radar deployed by the Space Shuttle Endeavour in February 2000 with a true-color Landsat picture. Along San Andreas Fault, the titanic Pacific Plate is shifting relative to the huge North American Plate by an average of a few centimeters per year. At that rate, in a few million years, the Earth's surface will look quite different than it does today.

Voyager's Ocean Planet

title	Voyager's Ocean Planet
date	09.18.1977
description	This picture of the Earth and Moon in a single frame, the first of its kind ever taken by a spacecraft, was recorded September 18, 1977, but NASAs Voyager 1 when it was 7.25 million miles (11.66 million kilometers) from Earth. The moon is at the top of the picture and beyond the Earth as viewed by Voyager. In the picture are eastern Asia, the western Pacific Ocean and part of the Arctic. Voyager 1 was directly above Mt. Everest (on the night side of the planet at 25 degrees north latitude) when the picture was taken. The photo was made from three images taken through color filters, then processed by the Image Processing Lab at Jet Propulsion Laboratory (JPL). Because the Earth is many times brighter than the Moon, the Moon was artificially brightened by a factor of three relative to the Earth by computer enhancement so that both bodies would show clearly in the prints. Voyager 1 was launched September 5, 1977 and Voyager 2 on August 20, 1977. JPL is responsible for the Voyager mission. Image Credit: NASA

Eclipsed Earth

title	Eclipsed Earth
date	08.11.1999
description	Here is what the Earth looks like during a solar eclipse. The shadow of the Moon can be seen darkening part of Earth. This shadow moves across the Earth at nearly 2,000 kilometers per hour. Only observers near the center of the dark circle see a total solar eclipse - others see a partial eclipse where only part of the Sun appears blocked by the Moon. This spectacular picture of the Aug. 11, 1999 solar eclipse was one of the last ever taken from the Mir space station. Mir was decommissioned after more than ten years of use. Image Credit: Centre National d'Etudes Spatiales

Storm Down Under

Description	An oval-shaped feature, wider than Earth and with streamers extending out to the east and west, swirls in Saturn's southern hemisphere.
Full Description	An oval-shaped feature, wider than Earth and with streamers extending out to the east and west, swirls in Saturn's southern hemisphere. Like the rainbands of a Southern Hemisphere hurricane on Earth, the streamers spiral into the feature in a clockwise direction. Unlike Earth's hurricanes, this storm probably contains no liquid water. The planet's equatorial rings cut across the top of the image. The image was taken in wavelengths of polarized infrared light with the Cassini spacecraft wide-angle camera on Oct. 30, 2005, at a distance of approximately 324,000 kilometers (202,000 miles) from Saturn. The image scale is 32 kilometers (20 miles) per pixel. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo. For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov . The Cassini imaging team homepage is at http://ciclops.org . Credit: NASA/JPL/Space Science Institute
Date	December 20, 2005

Pale Blue Orb (1)

Description	Pale Blue Orb
Full Description	Not since NASA's Voyager 1 spacecraft saw our home as a pale blue dot from beyond the orbit of Neptune has Earth been imaged in color from the outer solar system. Now, Cassini casts powerful eyes on our home planet, and captures Earth, a pale blue orb -- and a faint suggestion of our moon -- among the glories of the Saturn system. Earth is captured here in a natural color portrait made possible by the passing of Saturn directly in front of the sun from Cassini's point of view. At the distance of Saturn's orbit, Earth is too narrowly separated from the sun for the spacecraft to safely point its cameras and other instruments toward its birthplace without protection from the sun's glare. The Earth-and-moon system is visible as a bright blue point on the right side of the image above center. Here, Cassini is looking down on the Atlantic Ocean and the western coast of north Africa. The phase angle of Earth, seen from Cassini is about 30 degrees. A magnified view of the image taken through the clear filter (monochrome) shows the moon as a dim protrusion to the upper left of Earth. Seen from the outer solar system through Cassini's cameras, the entire expanse of direct human experience, so far, is nothing more than a few pixels across. Earth no longer holds the distinction of being our solar system's only "water world," as several other bodies suggest the possibility that they too harbor liquid water beneath their surfaces. The Saturnian moon, Enceladus, is among them, and is also captured on the left in this image (see inset), with its plume of water ice particles and swathed in the blue E ring which it creates. Delicate fingers of material extend from the active moon into the E ring. See Ghostly Fingers of Enceladus, for a more detailed view of these newly-revealed features. The narrow tenuous G ring and the main rings are seen at the right. The view looks down from about 15 degrees above the un-illuminated side of the rings. Images taken using red, green and blue spectral filters were combined to create this view. The image was taken by the Cassini spacecraft wide-angle camera on Sept. 15, 2006, at a distance of approximately 2.1 million kilometers (1.3 million miles) from Saturn and at a sun-Saturn-spacecraft angle of almost 179 degrees. Image scale is 129 kilometers (80 miles) per pixel. At this time, Cassini was nearly 1.5 billion kilometers (930 million miles) from Earth. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo. For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov ., The Cassini imaging team homepage is at http://ciclops.org . Credit: NASA/JPL/Space Science Institute
Date	September 19, 2006

Apollo 9 Lunar Module "Spider" Over Earth's Ocean

Apollo 9 Lunar Module "Spide …

title	Apollo 9 Lunar Module "Spider" Over Earth's Ocean
date	03.09.1969
description	Apollo 9 Command/Service Modules (CSM) nicknamed "Gumdrop" and Lunar Module (LM), nicknamed "Spider" are shown docked together as Command Module pilot David R. Scott stands in the open hatch. Astronaut Russell L. Schweickart, Lunar Module pilot, took this photograph of Scott during his EVA as he stood on the porch outside the Lunar Module. Apollo 9 was an Earth orbital mission designed to test docking procedures between the CSM and LM as well as test fly the Lunar Module in the relative safe confines of Earth orbit.

Terrestrial Planet Sizes

title	Terrestrial Planet Sizes
description	The terrestrial planets are the four innermost planets in the solar system, Mercury, Venus, Earth, and Mars. They are called terrestrial because they have a compact, rocky surface like the Earth's. The planets Venus, Earth, and Mars have significant atmospheres, while Mercury has almost none. This diagram shows the approximate relative sizes of the terrestrial planets. Distances are not to scale. Image Credit: Lunar and Planetary Institute

All Planet Sizes

title	All Planet Sizes
description	This illustration shows the approximate sizes of the planets relative to each other. Outward from the Sun, the planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. Jupiter's diameter is about 11 times that of the Earth's and the Sun's diameter is about 10 times Jupiter's. Pluto's diameter is slightly less than one-fifth of Earth's. The planets are not shown at the appropriate distance from the Sun. Image Credit: Lunar and Planetary Laboratory

Auroras Underfoot

title	Auroras Underfoot
description	If you think auroras look spectacular from Earth, check out the view astronauts aboard the Space Shuttle and International Space Station get when the Earth's magnetosphere is struck by a Coronal Mass Ejection (CME) from our Sun.

Aurora Australis

title	Aurora Australis
description	On June 2nd, Earth entered a high-speed solar wind stream. Its source: a coronal hole on the sun. Solar wind gusts shook Earth's magnetic field and sparked bright auroras for days.

Cold Hole Over Jupiter

title	Cold Hole Over Jupiter
description	An intriguing polar vortex on Jupiter is providing scientists with a 'natural laboratory' to study the phenomenon that also affects Earth. Scientists may be able to study models of vortex phenomena on Jupiter without interference found on Earth.

Pale Blue Orb (2)

title	Pale Blue Orb (2)
date	09.15.2006
description	Not since NASA's Voyager 1 spacecraft saw our home as a pale blue dot from beyond the orbit of Neptune has Earth been imaged in color from the outer solar system. Now, Cassini casts powerful eyes on our home planet, and captures Earth, a pale blue orb -- and a faint suggestion of our moon -- among the glories of the Saturn system. Earth is captured here in a natural color portrait made possible by the passing of Saturn directly in front of the sun from Cassini's point of view. At the distance of Saturn's orbit, Earth is too narrowly separated from the sun for the spacecraft to safely point its cameras and other instruments toward its birthplace without protection from the sun's glare. The Earth-and-moon system is visible as a bright blue point on the right side of the image above center. Here, Cassini is looking down on the Atlantic Ocean and the western coast of north Africa. The phase angle of Earth, seen from Cassini is about 30 degrees. A magnified view of the image taken through the clear filter (monochrome) shows the moon as a dim protrusion to the upper left of Earth. Seen from the outer solar system through Cassini's cameras, the entire expanse of direct human experience, so far, is nothing more than a few pixels across. Earth no longer holds the distinction of being our solar system's only "water world," as several other bodies suggest the possibility that they too harbor liquid water beneath their surfaces. The Saturnian moon, Enceladus, is among them, and is also captured on the left in this image, with its plume of water ice particles and swathed in the blue E ring which it creates. Delicate fingers of material extend from the active moon into the E ring. See Ghostly Fingers of Enceladus [ http://saturn.jpl.nasa.gov/multimedia/images/image-details.cfm?imageID=2276 ], for a more detailed view of these newly-revealed features. The narrow tenuous G ring and the main rings are seen at the right. The view looks down from about 15 degrees above the un-illuminated side of the rings. Images taken using red, green and blue spectral filters were combined to create this view. The image was taken by the Cassini spacecraft wide-angle camera on Sept. 15, 2006, at a distance of approximately 2.1 million kilometers (1.3 million miles) from Saturn and at a sun-Saturn-spacecraft angle of almost 179 degrees. Image scale is approximately 250 kilometers (155 miles) per pixel. At this time, Cassini was nearly 1.5 billion kilometers (930 million miles) from Earth. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging operations center is based at the Space Science Institute in Boulder, Colo. For, more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov [ http://saturn.jpl.nasa.gov ] . The Cassini imaging team homepage is at http://ciclops.org [ http://ciclops.org ] . Credit: NASA/JPL/Space Science Institute

Coastline Remodeling

title	Coastline Remodeling
description	An illustration of a massive asteroid crashing into Earth. The Earth may have experienced such gigantic impacts in its youth, but fortunately today there are no projectiles this large to threaten our planet. Image Credit: Don Davis, NASA

Terrestrial Planet Interiors

title	Terrestrial Planet Interiors
description	Mercury Mercury has an average density of 5430 kilograms per cubic meter, which is second only to Earth among all the planets. It is estimated that the planet Mercury, like Earth, has a ferrous core with a size equivalent to two-thirds to three-fourths that of the planet's overall radius. The core is believed to be composed of an iron-nickel alloy covered by a mantle and surface crust. Venus It is believed that the composition of the planet Venus is similar to that of Earth. The planet crust extends to around 10-30 kilometers below the surface, under which the mantle reaches to a depth of some 3000 kilometers. The planet core comprises a liquid iron-nickel alloy. Average planet density is 5240 kilograms per cubic meter. Earth The Earth comprises three separate layers: a crust, a mantle, and a core (in descending order from the surface). The crust thickness averages 30 kilometers for land masses and 5 kilometers for seabeds. The mantle extends from just below the crust to some 2900 kilometers deep. The core below the mantle begins at a depth of around 5100 kilometers, and comprises an outer core (liquid iron-nickel alloy) and inner core (solid iron-nickel alloy). The crust is composed mainly of granite in the case of land masses and basalt in the case of seabeds. The mantle is composed primarily of peridotite and high-pressure minerals. Average planet density is 5520 kilograms per cubic meter. Mars Mars is roughly one-half the diameter of Earth. Due to its small size, it is believed that the martian center has cooled. Geological structure is mainly rock and metal. The mantle below the crust comprises iron-oxide-rich silicate. The core is made up of an iron-nickel alloy and iron sulfide. Average planet density is 3930 kilograms per cubic meter. Pluto The structure of Pluto is not very well understood at present. Nevertheless, spectroscopic observation from Earth in the 1970s has revealed that the planet surface is covered with methane ice. Surface temperature is -230?C (-382?F), and the frozen methane exhibits a bright coloration. However, with the exception of the polar caps, the frozen methane surface is seen to change to a dark red when eclipsed by its moon Charon. Average planet density is 2060 kilograms per cubic meter. The low average density requires that the planet must be a mix of ice and rock. Image Credit: Lunar and Planetary Institute

Earthrise - Apollo 8

title	Earthrise - Apollo 8
date	12.29.1968
description	This view of the rising Earth greeted the Apollo 8 astronauts as they came from behind the Moon after the lunar orbit insertion burn. Earth is about five degrees above the horizon in the photo. The unnamed surface features in the foreground are near the eastern limb of the Moon as viewed from Earth. The lunar horizon is approximately 780 kilometers from the spacecraft. Width of the photographed area at the horizon is about 175 km (109 miles). On the Earth 386,000 km (240,000 miles) away, the sunset terminator bisects Africa. Image Credit: NASA

Far Side of the Moon

title	Far Side of the Moon
description	This image of the moon was obtained by the Galileo Solid State imaging system on Dec. 8 at 7 p.m. PST as the Galileo spacecraft passed the Earth and was able to view the lunar surface from a vantage point not possible from the Earth. On the right-hand side of the image is seen the dark maria of Oceanus Procellarum, also visible from the Earth. The dark spots in the center are Mare Orientale, on the western limb of the nearside of the moon, a region barely visible from the Earth. This region and the bright far side highlands on the left have not been seen previously by a camera system such as the one on the Galileo spacecraft, which provides multispectral images of the lunar limb and far side which have not previously been obtained. Comparison of such images to those of the near-side areas from which Apollo astronauts have returned samples will help us understand the spectral properties and composition of the lunar far side. Image Credit: JPL

A Piece of the Asteroid Vest …

title	A Piece of the Asteroid Vesta
description	This meteorite is a sample of the crust of the asteroid Vesta, which is only the third solar system object beyond Earth where scientists have a laboratory sample (the other extraterrestrial samples are from Mars and the Moon). The meteorite is unique because it is made almost entirely of the mineral pyroxene, common in lava flows. The meteorite's mineral grain structure also indicates it was once molten, and its oxygen isotopes are unlike oxygen isotopes found for all other rocks of the Earth and Moon. The meteorite's chemical identity points to the asteroid Vesta because it has the same unique spectral signature of the mineral pyroxene. The meteorite also has the same pyroxene signature as other small asteroids, recently discovered near Vesta, that are considered "chips" blasted off Vesta's surface. This debris extends all the way to an "escape hatch" region in the asteroid belt called the Kirkwood gap. This region is swept free of asteroids because Jupiter's gravitational pull removes material from the main belt and hurls it onto a new orbit that crosses Earth's path around the Sun. The meteorite probably followed this route to Earth. It was torn off Vesta's surface as part of a larger fragment. Subsequent collisions broke apart the parent fragment and threw pieces toward the Kirkwood gap and onto a collision course toward Earth. The fragment's journey ended in 1960 when it fell in Western Australia. NASA's Hubble Space Telescope observations further confirm this scenario by revealing a giant impact basin on the 325-mile (525 km) diameter asteroid. The ancient impact was so powerful, it tore off a piece of the asteroid's crust, exposing a deeper mantle of rock. Most of the identified meteorites from Vesta are in the care of the Western Australian Museum. This 1.4 pound (631 gm) specimen comes from the New England Meteoritical Services. It is a complete specimen measuring 3.7 inch x 3.1 inch x 3.4 inch (9.6 cm x 8.1 cm x 8.7 cm) showing the fusion crust, evidence of the last stage in its journey to Earth. Image Credit: R. Kempton (New England Meteoritical Services)

Solar System Montage

Title	Solar System Montage
Full Description	This is a montage of planetary images taken by spacecraft managed by the Jet Propulsion Laboratory in Pasadena, CA. Included are (from top to bottom) images of Mercury, Venus, Earth (and Moon), Mars, Jupiter, Saturn, Uranus and Neptune. The spacecraft responsible for these images are as follows: the Mercury image was taken by Mariner 10, the Venus image by Magellan, the Earth image by Galileo, the Mars image by Viking, and the Jupiter, Saturn, Uranus and Neptune images by Voyager. Pluto is not shown as no spacecraft has yet visited it. The inner planets (Mercury, Venus, Earth, Moon, and Mars) are roughly to scale to each other, the outer planets (Jupiter, Saturn, Uranus, and Neptune) are roughly to scale to each other. Actual diameters are given below: Sun 1,390,000 km Mercury 4,879 km Venus 12,104 km Earth 12,756 km Moon 3,475 km Mars 6,794 km Jupiter 142.984 km Saturn 120,536 km Uranus 51,118 km Neptune 49,528 km Pluto 2,390 km
Date	04/09/1999
NASA Center	Jet Propulsion Laboratory

Bubbly Little Star

Title	Bubbly Little Star
Description	In this processed Spitzer Space Telescope image, baby star HH 46/47 can be seen blowing two massive "bubbles." The star is 1,140 light-years away from Earth. The infant star can be seen as a white spot toward the center of the Spitzer image. The two bubbles are shown as hollow elliptical shells of bluish-green material extending from the star. Wisps of green in the image reveal warm molecular hydrogen gas, while the bluish tints are formed by starlight scattered by surrounding dust. These bubbles formed when powerful jets of gas, traveling at 200 to 300 kilometers per second, or about 120 to 190 miles per second, smashed into the cosmic cloud of gas and dust that surrounds HH 46/47. The red specks at the end of each bubble show the presence of hot sulfur and iron gas where the star's narrow jets are currently crashing head-on into the cosmic cloud's gas and dust material. Whenever astronomers observe a star, or snap a stellar portrait, through the lens of any telescope, they know that what they are seeing is slightly blurred. To clear up the blurring in Spitzer images, astronomers at the Jet Propulsion Laboratory developed an image processing technique for Spitzer called Hi-Res deconvolution. This process reduces blurring and makes the image sharper and cleaner, enabling astronomers to see the emissions around forming stars in greater detail. When scientists applied this image processing technique to the Spitzer image of HH 46/47, they were able to see winds from the star and jets of gas that are carving the celestial bubbles. This infrared image is a three-color composite, with data at 3.6 microns represented in blue, 4.5 and 5.8 microns shown in green, and 24 microns represented as red.

Moonrise

title	Moonrise
date	01.26.2003
description	A quarter moon is visible in this oblique view of Earth's horizon and airglow, recorded with a digital still camera on the final mission of the Space Shuttle Columbia. Columbia's crew was killed on Feb. 1, 2003 when the shuttle broke up on re-entry into Earth's atmosphere. Image Credit: NASA

Adios Earth

title	Adios Earth
description	Well on its way to the Red Planet, Europe's Mars Express snapped this shot of Earth from a distance of about 8 million km (5 million miles).

Stellar Quakes

title	Stellar Quakes
date	12.27.2004
description	On December 27, 2004, a neutron star flared up so brightly, it temporarily blinded all the X-ray satellites in space for an instant, and lit up the Earth's upper atmosphere. This tremendous blast of energy was from a giant flare created by the neutron star's twisting magnetic field. Objects like this are called magnetars, and they produce magnetic fields trillions of time more powerful than those here on Earth. These fields are so strong they can actually buckle the surface of the neutron star causing these powerful star quakes.

Alaskan Glacier Quakes

title	Alaskan Glacier Quakes
date	08.02.2003
description	NASA and United States Geological Survey (USGS) scientists found that retreating glaciers in southern Alaska may be opening the way for future earthquakes. The study examined the likelihood of increased earthquake activity in southern Alaska as a result of rapidly melting glaciers. As glaciers melt they lighten the load on the Earth's crust. Tectonic plates, that are mobile pieces of the Earth's crust, can then move more freely, which increases the probability of earthquakes occurring in this region.

Eclipsed Earth

title	Eclipsed Earth
date	03.29.2006
description	The shadow of the moon falls on Earth as seen from the International Space Station, 230 miles above the planet, during a total solar eclipse at about 4:50 a.m. EST March 29. This digital photo was taken by the Expedition 12 crew, who are wrapping up a six-month mission on the ISS. Visible near the shadow are portions of Cyprus in the Mediterranean Sea and the coast of Turkey. Credit: NASA

Icy Mars

title	Icy Mars
date	05.18.1979
description	This high resolution photo of the surface of Mars was taken by Viking Lander 2 at its Utopia Planitia landing site on May 18, 1979, and relayed to Earth by Orbiter 1 on June 7th. It shows a thin coating of water ice on the rocks and soil. The time of the frost appearance corresponds almost exactly with the build up of frost one Martian year (23 Earth Months) ago. Image Credit: NASA

Fiction to Fact

title	Fiction to Fact
description	Jules Verne's 1865 science fiction novel "From the Earth to the Moon" inspired rocketry pioneers like Robert Goddard and Konstantin Tsiolovsky to work out the real mathematics and engineering of space flight. One-hundred-and-four years later, American astronauts Neil Armstrong and Buzz Aldrin became the first human beings to walk on the Moon. This illustration from one edition of the book shows passengers in Verne's space ship - fired to the Moon from a giant cannon on Earth - enjoying their first taste of weightlessness. Image Credit: NASA

Pioneer 1

title	Pioneer 1
date	10.11.1958
description	Pioneer 1, the second and most successful of three project Able space probes and the first spacecraft launched by the newly formed NASA, was intended to study the ionizing radiation, cosmic rays, magnetic fields, and micrometeorites in the vicinity of the Earth and in lunar orbit. Due to a launch vehicle malfunction, the spacecraft attained only a ballistic trajectory and never reached the Moon. It did return data on the near-Earth space environment. Image Credit: NASA

Earthrise Over Plaskett Crat …

title	Earthrise Over Plaskett Crater
description	The above is a view from Clementine of the full Earth over the north pole of the Moon. The crater with a central peak in the foreground is Plaskett (820N, 1740E, 110 kilometers in diameter). On Earth, Africa is clearly visible and nearly cloud free. This photo was taken by NASA's Clementine spacecraft in 1997. Image Credit: U.S. Geological Survey

Human Computer

title	Human Computer
date	01.01.1960
description	Melba Roy headed a group of NASA mathematicians, known as "computers," who tracked early Echo satellites in Earth orbit. Roy's computations helped produce the orbital element timetables by which millions saw the satellite from Earth as it passed overhead. Image Credit: NASA

Massive Terrestrial Strike

title	Massive Terrestrial Strike
description	Artist's concept of a catastrophic asteroid impact with the early Earth. An impact with a 500-km-diameter asteroid would effectively sterilize the planet. The Earth may have experienced such gigantic impacts in its youth, but fortunately today there are no projectiles this large to threaten our planet. Image Credit: Don Davis, NASA

Europa Tide Movie

title	Europa Tide Movie
description	In this movie Europa is seen in a cutaway view through two cycles of its 3.5 day orbit about the giant planet Jupiter. + View Movie Like Earth, Europa is thought to have an iron core, a rocky mantle and a surface ocean of salty water. Unlike on Earth, however, this ocean is deep enough to cover the whole moon, and being far from the sun, the ocean surface is globally frozen over. Europa's orbit is eccentric, which means as it travels around Jupiter, large tides, raised by Jupiter, rise and fall. Jupiter's position relative to Europa is also seen to librate, or wobble, with the same period. This tidal kneading causes frictional heating within Europa, much in the same way a paper clip bent back and forth can get hot to the touch, as illustrated by the red glow in the interior of Europa's rocky mantle and in the lower, warmer part of its ice shell. This tidal heating is what keeps Europa's ocean liquid and could prove critical to the survival of simple organisms within the ocean, if they exist. Credit: NASA/JPL

An Asteroid's Sky Trek

title	An Asteroid's Sky Trek
description	While analyzing NASA Hubble Space Telescope images of the Sagittarius dwarf irregular galaxy (SagDIG), an international team of astronomers led by Simone Marchi, Yazan Momany, and Luigi Bedin were surprised to see the trail of a faint asteroid that had drifted across the field of view during the exposures. The trail is seen as a series of 13 reddish arcs on the right in this August 2003 Advanced Camera for Surveys image. As the Hubble telescope orbits around the Earth, and the Earth moves around the Sun, a nearby asteroid in our solar system will appear to move with respect to the vastly more distant background stars, due to an effect called parallax. It is somewhat similar to the effect you see from a moving car, in which trees by the side of the road appear to be moving much more rapidly than background objects at much larger distances. If the Hubble exposure were a continuous one, the asteroid trail would appear like a continuous wavy line. However, the exposure with Hubble's camera was actually broken up into more than a dozen separate exposures. After each exposure, the camera's shutter was closed while the image was transferred from the electronic detector into the camera's computer memory, this accounts for the many interruptions in the asteroid's trail. Since the trajectory of the Hubble spacecraft around the Earth is known very accurately, it is possible to triangulate the distance to the asteroid in a manner similar to that used by terrestrial surveyors. It turns out to be a previously unknown asteroid, located 169 million miles from Earth at the time of observation. The distance places the new object, most likely, in the main asteroid belt, lying between the orbits of Mars and Jupiter. Based on the observed brightness of the asteroid, the astronomers estimate that it has a diameter of about 1.5 miles. The brightest stars in the picture (easily distinguished by the spikes radiating from their images, produced by optical effects within the telescope), are foreground stars lying within our own Milky Way galaxy. Their distances from Earth are typically a few thousand light-years. The faint, bluish SagDIG stars lie at about 3.5 million light-years (1.1 Megaparsecs) from us. Lastly, background galaxies (reddish/brown extended objects with spiral arms and halos) are located even further beyond SagDIG at several tens of millions parsecs away. There is thus a vast range of distances among the objects visible in this photo, ranging from about 169 million miles for the asteroid, up to many quadrillions of miles for the faint, small galaxies. The team reported their science findings about the asteroid in the October 2004 issue of New Astronomy. Image Credit: NASA, ESA, and Y. Momany (University of Padua)

Opportunity's Second Martian Birthday at Cape Verde

Opportunity's Second Martian …

title	Opportunity's Second Martian Birthday at Cape Verde
date	10.20.2007
description	A promontory nicknamed "Cape Verde" can be seen jutting out from the walls of Victoria Crater in this approximate true-color picture taken by the panoramic camera on NASA's Mars Exploration Rover Opportunity. The rover took this picture on martian day, or sol, 1329 (Oct. 20, 2007), more than a month after it began descending down the crater walls - and just 9 sols shy of its second Martian birthday on sol 1338 (Oct. 29, 2007). Opportunity landed on the Red Planet on Jan. 25, 2004. That's nearly four years ago on Earth, but only two on Mars because Mars takes longer to travel around the sun than Earth. One Martian year equals 687 Earth days. The overall soft quality of the image, and the "haze" seen in the lower right portion, are the result of scattered light from dust on the front sapphire window of the rover's camera. This view was taken using three panoramic-camera filters, admitting light with wavelengths centered at 750 nanometers (near infrared), 530 nanometers (green) and 430 nanometers (violet). Image Credit: NASA/JPL-Caltech/Cornell

SMART-1 Looks Back

title	SMART-1 Looks Back
description	The first picture of Earth taken by the SMART-1 spacecraft on 21 May 2004 from a distance of 70,000 kilometres. The image shows from top left, Scandinavia, Denmark, United Kingdom and clear west and northern France. Southern France and Spain are at the centre under cloud cover. North Africa is bottom right (in the full-resoltion image). The image was taken by the Advanced Moon Micro-Imager Experiment (AMIE) camera. This imaging system has been developed by the Space-X company in Neuchatel, Switzerland. The AMIE camera is a remarkably compact design, a package of dedicated optics, electronics and mechanical interfaces that weighs only 450 grams. Once in orbit around the Moon, AMIE will survey the lunar terrain using visible and near-infrared light, providing clues about its chemical composition and geological history."The image shows clearly that the AMIE camera works well, and that we are really in space," says Principal Investigator Jean Luc Josset, Space-X."This picture is a great view of Earth seen as a planet," says ESA Project Scientist Bernard Foing. "Further synoptic images of Earth obtained during the cruise phase will be used to compare the signature of geophysical processes with what we shall measure on the Moon." Image Credit: European Space Agency

The Sounds of Earth

Title	The Sounds of Earth
Full Description	Flying board Voyagers 1 and 2 are identical "golden" records, carrying the story of Earth far into deep space. The 12 inch gold-plated copper discs contain greetings in 60 languages, samples of music from different cultures and eras, and natural and man-made sounds from Earth. They also contain electronic information that an advanced technological civilization could convert into diagrams and photographs. The cover of each gold plated aluminum jacket, designed to protect the record from micrometeorite bombardment, also serves a double purpose in providing the finder a key to playing the record. The explanatory diagram appears on both the inner and outer surfaces of the cover, as the outer diagram will be eroded in time. Currently, both Voyager probes are sailing adrift in the black sea of interplanetary space, having left our solar system years ago.
Date	09/05/1977
NASA Center	Jet Propulsion Laboratory

Description	Here on the Gallery page you can find the very latest images, videos and products from the Cassini-Huygens mission to Saturn, including the spectacular launch, spacecraft assembly and the exciting trip to Saturn.
Full Description	A DVD bearing 616,400 digitized signatures of people from nations around the world was attached to the Cassini spacecraft. The disk cover, designed by Cassini science and engineering manager Charley Kohlhase, shows the flags from 28 of the 81 nations whose citizens sent signatures for the chance to send their names into space. The flags, going clockwise from the American flag top center, are in order of the number of signatures collected, with the highest number from the United States. The planet Saturn with its rings and its moon Titan and the Earth are also represented, as is the Cassini spacecraft and the Huygens probe. The feathers represent the Golden Eagle, whose feathers were used as quills for writing to spread wisdom. The bird is revered in mythology for carrying spirits above the Earth to the heavens. Cassini is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, Calif., manages the Cassini mission for NASA's Office of Space Science, Washington, D.C. For a high resolution image, click here.

Scrutinizing Titan's Surface

Description	Scrutinizing Titan's Surface
Full Description	The six close-up views of Titan's surface shown here are composed of images acquired by the Cassini spacecraft during flybys in October (see Titan Mosaic: October 2004) and December (see Titan Mosaic: December 2004) of 2004. These close-up views illustrate that a variety of processes have shaped the surface of Titan, just as diverse geologic processes are responsible for what we see on Earth's surface. Image (a) shows a prominent bright-dark boundary near the western edge of the Xanadu region which exhibits a sharp, angular edge between the materials. Three bright, discontinuous circles can be seen (two near the top of the image and another near the lower left). These may be large impact craters, the upper two are approximately 30 kilometers (18.6 miles) in diameter and the lower one is approximately 50 kilometers (20 miles) in diameter. Titan's thick atmosphere will screen out small projectiles, but if the surface were as old as Titan itself, it should have many more craters of these sizes. Therefore, Cassini scientists think that, like Earth's surface, Titan's surface has been modified more recently by other geologic processes. However, such processes on Titan may take much longer than on Earth, acting over hundreds of millions of years. Image (b) shows bright features that appear to be streamlined as if were they formed by winds in Titan's atmosphere moving from west to east. The landing site of the Huygens probe is in the upper left corner of this image (see Cassini's View of Titan Landing Site). Image (c) shows a bright feature surrounded by dark material. Several long, dark and narrow lines running through the bright area may be larger examples of the dark channels seen by the Huygens probe (see Mosaic of River Channel and Ridge Area on Titan). These lines are on the order of 2 kilometers (1 mile) wide, and tens of kilometers long. Image (d) shows dark material within the bright area to the west of Xanadu. The linear nature of these features suggests that they may have formed by faulting. They may be dark due to modification by other surface processes occurring on Titan, in the same way that on Earth, fault-lines can be enhanced by erosion and/or deposition of material by water and wind. Image (e) shows brightness variations in the region southeast of the Huygens landing site. The features indicated by arrows exhibit shapes that are similar to drainage patterns seen on Earth and Mars, where the source of the liquid is underground springs rather than rainfall. Image (f) shows a region near the northwestern edge of Xanadu where the boundary between the bright and dark materials is quite complicated. Here some of the bright patches appear as if they represent thin surface plates that have been broken apart and spread apart over underlying dark material. The white bars above each image are 200 kilometers (124 miles) long. Imaging Titan through its thick atmosphere is a challenge, and the narrow, straight lines within the images, are seams between individual images that have not been completely removed. North is to the top of each frame. The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and the Italian Space Agency. The Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington, D.C. The Cassini orbiter and its two onboard cameras were designed, developed and assembled at JPL. The imaging team is based at the Space Science Institute, Boulder, Colo. For more information about the Cassini-Huygens mission visit http://saturn.jpl.nasa.gov . For additional images visit the Cassini imaging team homepage http://ciclops.org . Credit: NASA/JPL/Space Science Institute.
Date	March 9, 2005

Isabel Marches On

title	Isabel Marches On
description	A variety of Earth-orbiting satellites are tracking Hurricane Isabel as it proceeds towards the America's East Coast. This image was taken by a National Oceanographic and Atmospheric Administration (NOAA) satellite on Sept. 15.

New Mars Meteorite

title	New Mars Meteorite
description	Scientists believe this small rock - NWA 1669 - was blasted from Mars to the Earth several million or even billions of years ago. Discovered in North Africa, it is one of only 27 known Mars meteorites. Image Copyright: Bruno Fectau and Carine Bidaut)

Hubble Space Telescope

title	Hubble Space Telescope
date	02.08.2001
description	Artist's concept of the Hubble Space Telescope in orbit above Earth. Image Credit: NASA and STScI

Asiasat 3

title	Asiasat 3
description	An artist's view of Asiasat 3, the first commercial spacecraft to use circumlunar navigation to orbit the Earth. The spacecraft was renamed HGS 1. Image Credit: Boeing

ISEE3-ICE

title	ISEE3-ICE
description	Known as International Sun-Earth Explorer 3 and International Cometary Explorer, this spacecraft scored a number of firsts - including the first comet flyby. Image Credit: NASA

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