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New stars shed light on the past
01-08-2007 · EurekAlert!A new image from the Hubble Space Telescope shows N90, one of the star-forming regions in the Small Magellanic Cloud. The rich populations of infant stars found here enable astronomers to examine star forming processes in an environment that is very different from that in our own Milky Way.
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Keywords: stars, shed, light, past, star
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- Greenland's ancient forests shed light on stability of ice sheet
07-05-2007 · EurekAlert!
Ice cores drilled from southern Greenland have revealed the first evidence of a surprisingly lush forest that existed in the region within the past million years. The findings from an international study published today in the journal Science suggest that the southern Greenland ice sheet may be much more stable against rising temperatures than previously thought.
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- Asymmetric ashes
11-30-2006 · EurekAlert!
Astronomers are reporting remarkable new findings that shed light on a decade-long debate about one kind of supernovae, the explosions that mark a star's final demise: Does the star die in a slow burn or with a fast bang? From their observations, the scientists find that the matter ejected by the explosion shows significant peripheral asymmetry but a nearly spherical interior, most likely implying that the explosion finally propagates at supersonic speed.
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- Star family seen through dusty fog
03-13-2007 · EurekAlert!
Images made with ESO's New Technology Telescope at La Silla by a team of German astronomers reveal a rich circular cluster of stars in the inner parts of our Galaxy. Located 30,000 light-years away, this previously unknown closely-packed group of about 100,000 stars is most likely a new globular cluster.
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- Light echoes whisper the distance to a star
02-10-2008 · EurekAlert!
Taking advantage of the presence of light echoes, a team of astronomers have used an ESO telescope to measure, at the 1 percent precision level, the distance of a Cepheid -- a class of variable stars that constitutes one of the first steps in the cosmic distance ladder.
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- NASA scientists detect spectrum of planets orbiting other stars
02-22-2007 · EurekAlert!
For the first time, scientists at Goddard have obtained a spectrum, or molecular fingerprint, of a planet orbiting another star. Using spectroscopy, scientists were able to identify silicon dust in clouds on a gas-giant planet called HD 209458b. That planet is located 150 light years from Earth.
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- Birth, death and rebirth: AKARI sees life-cycle of stars in a new light
03-26-2007 · EurekAlert!
Scientists using the AKARI infrared satellite, launched in 2006, are releasing their initial results at a conference on March 28-30. AKARI has shed new light on both the birth and death of stars and galaxies, phenomena that take place in dusty areas of the universe and can best be studied in the infrared.
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- Star light, star bright: FSU facility duplicating conditions of supernovas
08-14-2007 · EurekAlert!
How is matter created? What happens when stars die? Is the universe shrinking, or is it expanding? At Florida State University, a new facility known as RESOLUT is helping physicists conduct experiments that may help provide answers to just such questions.
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- Study sheds new light on early star formation in the universe
09-13-2007 · EurekAlert!
A groundbreaking study has provided new insight into the way the first stars were formed at the start of the universe, some 13 billion years ago. Cosmologists from Durham University, publishing their results in the prestigious international academic journal, Science, suggest that the formation of the first stars depends crucially on the nature of "dark matter," the strange material that makes up most of the mass in the universe.
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- Oldest stars may shed light on dark matter, researchers report in Science
09-13-2007 · EurekAlert!
The universe's earliest stars may hold clues to the nature of dark matter, the mysterious stuff that makes up most of the universe's matter but doesn’t interact with light, cosmologists report.
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- Intergalactic 'shot in the dark' shocks astronomers
12-18-2007 · EurekAlert!
A team of astronomers has discovered a cosmic explosion that seems to have come from the middle of nowhere -- thousands of light-years from the nearest galaxy-sized collection of stars, gas, and dust. This "shot in the dark" is surprising because the type of explosion, a long-duration gamma-ray burst, is thought to be powered by the death of a massive star.
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