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25 to 36 of 3,149 stories (374 over past year)
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Four White Dwarf Stars Caught in the Act of Consuming 'Earth-Like' Exoplanets
May 3, 2012 — Astrophysicists have pinpointed four white dwarfs surrounded by dust from shattered planetary bodies which once bore striking similarities to the composition of ... > full story -
Black Hole Caught Red-Handed in a Stellar Homicide
May 2, 2012 — Astronomers have gathered the most direct evidence yet of a supermassive black hole shredding a star that wandered too close. Supermassive black holes, weighing millions to billions times more than ... > full storyMore: -
Sifting Through Dust Near Orion's Belt
May 2, 2012 — A new image of the region surrounding the reflection nebula Messier 78, just to the north of Orion’s Belt, shows clouds of cosmic dust threaded through the nebula like a string of pearls. The ... > full story -
Under 'Dark Halo' Old Galaxies Have Many More Stars
May 1, 2012 — Some of the oldest galaxies in the Universe have three times more stellar mass, and so many more stars, than all current models of galaxy evolution ... > full story -
Venus to Appear in Once-in-a-Lifetime Event
May 1, 2012 — On 5 and 6 June this year, millions of people around the world will be able to see Venus pass across the face of the Sun in what will be a once-in-a-lifetime experience. It will take Venus about six ... > full story -
Remarkable Outburst Seen from Old Black Hole
April 30, 2012 — An extraordinary outburst produced by a black hole in a nearby galaxy has provided direct evidence for a population of old, volatile stellar black holes. The discovery provides new insight into the ... > full story -
Rogue Stars Ejected from the Galaxy Are Found in Intergalactic Space
April 30, 2012 — Astronomers have identified nearly 700 rogue stars that appear to have been ejected from the Milky Way ... > full story -
Old Star, New Trick: Astronomers Have Detected Arsenic and Selenium in Ancient Star for First Time
April 30, 2012 — For the first time, astronomers have detected the presence of arsenic and selenium, neighboring elements near the middle of the periodic table, in an ancient star in the faint stellar halo that ... > full story -
Record-Breaking Radio Waves Discovered from Ultra-Cool Star
April 30, 2012 — Astronomers have discovered flaring radio emissions from an ultra-cool star that is not much warmer than the planet Jupiter, shattering the previous record for the lowest temperature at which radio ... > full story -
Hubble Images Searchlight Beams from a Preplanetary Nebula
April 27, 2012 — The NASA/ESA Hubble Space Telescope has been at the cutting edge of research into what happens to stars like our sun at the ends of their lives. One stage that stars pass through as they run out of ... > full story -
Spectacular Star Cluster a Wing-Span Away from Eagle Nebula
April 25, 2012 — The star cluster NGC 6604 is shown in a new image. It is often overlooked in favor of its more prominent neighbor, the Eagle Nebula (also known as Messier 16), that lies a mere wingspan away. But the ... > full story -
Vast Structure of Satellite Galaxies Discovered: Do the Milky Way’s Companions Spell Trouble for Dark Matter?
April 25, 2012 — Astronomers have discovered a vast structure of satellite galaxies and clusters of stars surrounding our Galaxy, stretching out across a million light years. The work challenges the existence of dark ... > full story
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