Huge black hole tips the scales
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A Finnish team describes a black hole that is a record 18 billion times more massive than our own Sun.
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The discovery of a large disc of dust around a double star system may force a rethink of some astronomical models.
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A theory of how the universe expanded and a tool used to expand global communication networks are being touted as breakthroughs worthy of this year's Nobel Prize in physics.
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A powerful jet from a supermassive black hole is blasting a nearby galaxy and possibly causing profound problems for planets in the jet's path.
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Astronomers identify an enormous void in space that measures nearly a billion light-years across.
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A swirling space observatory has been launched to scan the universe for explosions that some believe are the birth of black holes.
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Astronomers have spotted two monster galactic clusters slamming together in one of the biggest collisions ever recorded. The smash-up poses no danger to Earth -- it is about 800 million light-years away, and
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A telescope with a 4-inch diameter -- about the size that some backyard astronomers might use -- tracked the periodic dimming of light from a bright star 500 light-years away.
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The center of our galaxy is approximately    27,000 light-years away in the direction of the constellation Sagittarius. At    its core, as scientist have known for some time, lies a supermassive black hole    surrounded by millions of stars, all huddled far more closely than in the galactic    outskirts where our Sun resides.
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Evidence for an awesome upheaval in a massive galaxy cluster was discovered in an image made by NASA's Chandra X-ray Observatory.
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At the center of a black hole there lies a point called a singularity where the laws of physics no longer make sense.
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Black holes are complex beasts. Among their mysterious traits are intense jets of matter that sometimes shoot out from the rotational poles at nearly light-speed.
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A 20-year battle with environmentalists and others over placing a powerful optical telescope atop Mount Graham in Arizona is nearing an end. Astronomers may be using the Large Binocular Telescope by next year.
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The things astronomers discover as they probe deeper into the universe -- orphaned baby stars, planet-devouring black holes -- paint a bleak picture of "out there." Heck, we might as well stay home.
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Astronomers believe they've glimpsed light from some of the universe's first stars through the world's largest telescope on the Big Island.
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Astronomers are watching a galaxy rip to shreds, a finding that could help reveal how galaxies go from stellar riches to rags.
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SAN FRANCISCO -- At the center of a black hole there lies a point called a singularity where the laws of physics no longer make sense.