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Hubble Spies Shells of Spark …
Title Hubble Spies Shells of Sparkling Stars Around Quasar
Hubble Spies Shells of Spark …
Title Hubble Spies Shells of Sparkling Stars Around Quasar
Astronomers Find One of the …
Title Astronomers Find One of the Youngest and Brightest Galaxies in the Early Universe
Astronomers Find One of the …
Title Astronomers Find One of the Youngest and Brightest Galaxies in the Early Universe
Hubble Maps the Cosmic Web o …
Title Hubble Maps the Cosmic Web of "Clumpy" Dark Matter in 3-D
General Information What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. An international team of astronomers using NASA's Hubble Space Telescope has created a three-dimensional map that provides the first direct look at the large-scale distribution of dark matter in the universe. Read more: * NASA Press Release [ http://hubblesite.org/newscenter/archive/releases/2007/01/text/ ] * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2007/01/full/ ]
Kepler's SNR from Chandra, H …
Title Kepler's SNR from Chandra, Hubble, and Spitzer
Explanation Light from the stellar explosion that created this energized cosmic cloud was first seen on planet Earth in October 1604, a mere four hundred years ago [ http://arxiv.org/abs/astro-ph/0410081 ]. The supernova produced a bright new star [ http://www.spitzer.caltech.edu/Media/releases/ ssc2004-15/ssc2004-15c.shtml ] in early 17th century skies within the constellation Ophiuchus. It was studied by astronomer Johannes Kepler [ http://galileo.rice.edu/sci/kepler.html ] and his contemporaries, with out the benefit of a telescope, as they searched for an explanation of the heavenly apparition. Armed with a modern understanding [ http://rsd-www.nrl.navy.mil/7212/montes/sne.html ] of stellar evolution, early 21st century astronomers continue to explore the expanding debris cloud, but can now use orbiting space telescopes to survey Kepler's supernova remnant (SNR) across the spectrum [ http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ multiwavelength_astronomy/multiwavelength_astronomy/ index.html ]. In this tantalizing composite image, x-rays [ http://chandra.harvard.edu/photo/2004/kepler/ ], visible [ http://hubblesite.org/newscenter/newsdesk/archive/releases/ 2004/29/ ] light, and infrared [ http://www.spitzer.caltech.edu/Media/releases/ssc2004-15/ ssc2004-15a.shtml ] radiation recorded by NASA's astrophysical observatories - the Chandra [ http://chandra.harvard.edu/ ] X-Ray Observatory, Hubble [ http://hubblesite.org/ ] and Spitzer [ http://www.spitzer.caltech.edu/ ] space telescopes - are combined to give a more comprehensive view of the still enigmatic supernova remnant. About 13,000 light years away, Kepler's supernova [ http://www.seds.org/~spider/spider/Vars/ sn1604.html ] represents the most recent stellar explosion seen to occur within [ http://www.mrao.cam.ac.uk/surveys/snrs/ ] our Milky Way galaxy.
Mystery Solved: High-Energy …
Title Mystery Solved: High-Energy Fireworks Linked to Massive Star Cluster
General Information What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. Call it the Bermuda Triangle of our Milky Way Galaxy: a tiny patch of sky that has been known for years to be the source of the mysterious blasts of X-rays and gamma rays. Now, a team of astronomers, led by Don Figer of the Space Telescope Science Institute in Baltimore, Md., has solved the mystery by identifying one of the most massive star clusters in the galaxy. The little-known cluster, which has not been catalogued, is about 20 times more massive than typical star clusters in our galaxy, and appears to be the source of the powerful outbursts. Supporting evidence for the hefty weight of this cluster is the presence of 14 red supergiants, hefty stars that have reached the end of their lives. They bloat up to about 100 times their normal size before exploding as supernovae. This image shows the star-studded region surrounding the massive star cluster. The bluish cluster is inside the white box. A close-up of the cluster can be seen in the inset photo. Read more: * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2006/03/full/ ]
Mystery Solved: High-Energy …
Title Mystery Solved: High-Energy Fireworks Linked to Massive Star Cluster
General Information What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. Call it the Bermuda Triangle of our Milky Way Galaxy: a tiny patch of sky that has been known for years to be the source of the mysterious blasts of X-rays and gamma rays. Now, a team of astronomers, led by Don Figer of the Space Telescope Science Institute in Baltimore, Md., has solved the mystery by identifying one of the most massive star clusters in the galaxy. The little-known cluster, which has not been catalogued, is about 20 times more massive than typical star clusters in our galaxy, and appears to be the source of the powerful outbursts. Supporting evidence for the hefty weight of this cluster is the presence of 14 red supergiants, hefty stars that have reached the end of their lives. They bloat up to about 100 times their normal size before exploding as supernovae. This image shows the star-studded region surrounding the massive star cluster. The bluish cluster is inside the white box. A close-up of the cluster can be seen in the inset photo. Read more: * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2006/03/full/ ]
Mystery Solved: High-Energy …
Title Mystery Solved: High-Energy Fireworks Linked to Massive Star Cluster
General Information What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. Call it the Bermuda Triangle of our Milky Way Galaxy: a tiny patch of sky that has been known for years to be the source of the mysterious blasts of X-rays and gamma rays. Now, a team of astronomers, led by Don Figer of the Space Telescope Science Institute in Baltimore, Md., has solved the mystery by identifying one of the most massive star clusters in the galaxy. The little-known cluster, which has not been catalogued, is about 20 times more massive than typical star clusters in our galaxy, and appears to be the source of the powerful outbursts. Supporting evidence for the hefty weight of this cluster is the presence of 14 red supergiants, hefty stars that have reached the end of their lives. They bloat up to about 100 times their normal size before exploding as supernovae. This image shows the star-studded region surrounding the massive star cluster. The bluish cluster is inside the white box. A close-up of the cluster can be seen in the inset photo. Read more: * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2006/03/full/ ]
Death Star" Galaxy Black Hol …
Title Death Star" Galaxy Black Hole Fires at Neighboring Galaxy
Hubble Approaches the Final …
Title Hubble Approaches the Final Frontier: The Dawn of Galaxies
Mystery Solved: High-Energy …
Title Mystery Solved: High-Energy Fireworks Linked to Massive Star Cluster
General Information What is an American Astronomical Society Meeting release? A major news announcement issued at an American Astronomical Society meeting, the premier astronomy conference. Call it the Bermuda Triangle of our Milky Way Galaxy: a tiny patch of sky that has been known for years to be the source of the mysterious blasts of X-rays and gamma rays. Now, a team of astronomers, led by Don Figer of the Space Telescope Science Institute in Baltimore, Md., has solved the mystery by identifying one of the most massive star clusters in the galaxy. The little-known cluster, which has not been catalogued, is about 20 times more massive than typical star clusters in our galaxy, and appears to be the source of the powerful outbursts. Supporting evidence for the hefty weight of this cluster is the presence of 14 red supergiants, hefty stars that have reached the end of their lives. They bloat up to about 100 times their normal size before exploding as supernovae. This image shows the star-studded region surrounding the massive star cluster. The bluish cluster is inside the white box. A close-up of the cluster can be seen in the inset photo. Read more: * The Full Story [ http://hubblesite.org/newscenter/archive/releases/2006/03/full/ ]
Galaxy Mission Completes Fou …
PIA09337
GALEX Telescope
Title Galaxy Mission Completes Four Star-Studded Years in Space
Original Caption Released with Image NASA's Galaxy Evolution Explorer is celebrating its fourth year in space with some of M81's "hottest" stars. In a new ultraviolet image, the magnificent M81 spiral galaxy is shown at the center. The orbiting observatory spies the galaxy's "sizzling young starlets" as wisps of bluish-white swirling around a central golden glow. The tints of gold at M81's center come from a "senior citizen" population of smoldering stars. "This is a spectacular view of M81," says Dr. John Huchra, of the Harvard Smithsonian Center for Astrophysics, Cambridge, Mass. "When we proposed to observe this galaxy with GALEX we hoped to see globular clusters, open clusters, and young stars...this view is everything that we were hoping for." The image is one of thousands gathered so far by GALEX, which launched April 28, 2003. This mission uses ultraviolet wavelengths to measure the history of star formation 80 percent of the way back to the Big Bang. The large fluffy bluish-white material to the left of M81 is a neighboring galaxy called Holmberg IX. This galaxy is practically invisible to the naked human eye. However, it is illuminated brilliantly in GALEX's wide ultraviolet eyes. Its ultraviolet colors show that it is actively forming young stars. The bluish-white fuzz in the space surrounding M81 and Holmberg IX is new star formation triggered by gravitational interactions between the two galaxies. Huchra notes that the active star formation in Holmberg IX is a surprise, and says that more research needs to be done in light of the new findings from GALEX. "Some astronomers suspect that the galaxy Holmberg IX is the result of a galactic interaction between M81 and another neighboring galaxy M82," says Huchra. "This particular galaxy is especially important because there are a lot of galaxies like Holmberg IX around our Milky Way galaxy. By understanding how Holmberg IX came to be, we hope to understand how all the little galaxies surrounding the Milky Way developed.""Four years after GALEX's launch, the spacecraft is performing magnificently. The mission results have been simply amazing as it helps us to unlock the secrets of galaxies, the building blocks of our universe," says Kerry Erickson, GALEX project manager. M81 and Holberg IX are located approximately 12 million light-years away in the northern constellation Ursa Major. In addition to leading the GALEX observations of M81, Huchra and his team also took observations of the region with NASA's Spitzer and Hubble space telescopes. By combining all these views of M81, Huchra hopes to gain a better understanding about how M81 has developed into the spiral galaxy we see today. The California Institute of Technology in Pasadena, Calif., leads the Galaxy Evolution Explorer mission and is responsible for science operations and data analysis. NASA's Jet Propulsion Laboratory, also in Pasadena, manages the mission and built the science instrument. The mission was developed under NASA's Explorers Program, managed by the Goddard Space Flight Center, Greenbelt, Md. Researchers from South Korea and France collaborated on this mission.
Hubble Approaches the Final …
Title Hubble Approaches the Final Frontier: The Dawn of Galaxies
Hubble Pinpoints Doomed Star …
Title Hubble Pinpoints Doomed Star that Explodes as Supernova
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