How Collisions Shaped an Asteroid
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Next Fourth of July, NASA will slam a heavy probe the size of a garbage can    into a comet, purposely carving a football-field sized crater for inspection.    As for&nbsp;what exactly&nbsp;will happen,&nbsp;however, nobody really knows.
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The sun may have captured millions of asteroids from another planetary system during an encounter more than 4 billion years ago, astronomers report today.
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The possibility of a collision between Mars and an approaching asteroid has been effectively ruled out, according to scientists watching the space rock
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HILO, Hawai&#39;i - Scientists released images yesterday of a collision of two galaxy clusters as they crash into each other like immense storm systems, a process that releases more energy than anything but the Big Bang itself.
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An asteroid that exploded over Siberia a century ago, leaving 800 square miles of scorched or blown down trees, wasn't nearly as large as previously thought, a researcher concludes, suggesting a greater danger for Earth.
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London - The Astronomers were doubtful that the asteroid could hit the Earth in 2029 and the people felt panicky. They felt that 2004 MN4 had a 1-in-40 chance of a collision on Friday, April 13, 2029.
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Earth is about to gets its closest brush this century with a massive asteroid, a hurtling space rock astronomers say is big enough to cause global devastation if it were to collide with the planet.
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If you think Earth is a mess, consider the turmoil in the constellation Hydra, where astronomers have spotted two monster galactic clusters slamming together in one of the biggest collisions ever recorded.
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Today's close passage of the relatively large asteroid, Toutatis, has presented astronomers with a new ruler to measure solar system distances. By using two telescopes separated by hundreds of miles, the classic parallax method validates the asteroid's orbital path...
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Scientists expect to detect a lot more asteroid threats with new technology, but it's still not clear what anyone will do about them. Randy Dotinga reports from the AAAS meeting in San Francisco.
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AUSTIN, Texas &mdash; An extrasolar planet about one-fourth the heft of Jupiter might have formed from the collision and merger of two planets, astronomers announced today.
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This animation illustrates a massive collision between rocky, embryonic planets as big as mountain ranges. Such collisions form the basis of the planet-building process.
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A pair of miniscule meteorite grains has helped astronomers settle a long-running debate on the origins of space dust belched out by dying stars.
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Since 1994 when Comet Shoemaker-Levy 9 collided with Jupiter, scientists have been researching if it may be possible to deflect incoming asteroids.
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The outer reaches of our solar system may have been shaped long ago by a close encounter with another star that tore up both nascent planetary systems like colliding buzz saws, astronomers said on Tuesday.
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This summer, NASA will launch a robotic probe to visit two stange and giant asteroids--one is covered with ice while the other may have been blasted by an ancient supernova.  The tales these asteroids tell may reveal the true beginnings of our solar system.
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A MASSIVE asteroid heading for Earth has a 1-in-300 chance of smashing into the planet in 2029, say boffins. The space rock is believed to be more than 1,300ft long and was only rediscovered