Earth's Solar System Shaped by Brush with Star, Astronomers Say
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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 today.
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In what could be a breakthrough in the search for worlds, an international team of astronomers claims to have made an image of a planetlike object beyond our solar system.
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NASA's Spitzer Space Telescope has spotted a dusty disc of material around a very small "failed star" called a brown dwarf, raising the possibility that there may be miniature solar systems in which planets orbit objects not much larger than planets, scientists said Monday.
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A giant rock spotted on the fringes of the Solar System has frozen water crystals on its surface, an intriguing discovery that suggests it may harbour volcanic activity, a study says.
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By MIKE SWAIN Science Editor  HERE is the world in all its wonder - captured from space in photographs as beautiful as anything from an artist's brush.   These remarkable pictures come from US space agency Nasa's satellite Earth observatory.
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New observations of dust around young stars suggests collisions of large asteroid-like objects and fledgling planets are frequent. But that doesn't likely stop the formation of rocky planets like Earth, a process that may well be common, the results suggest.
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While a terrestrial view of a galaxy might disguise the turbulent, changing mergers that fuel their formation, a famous cluster called Stephan's Quintet shows that seemingly immutable stars are always in flux.    Astrobiology Magazine -- A stunning image released by the Gemini Observatory captures the graceful interactions of a galactic ballet, on a stage some 300 million light years away, that might better be described as a contortionist's dance...
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Astronomers have discovered a new class of planets outside the solar system that hug their parent stars so tightly they take less than a day to complete an orbit.
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A new extra-solar planet has been identified orbiting a star 500 light years from our solar system. The discovery was made by a team using a four-inch diameter telescope to make their observations - a size
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WASHINGTON - Astronomers have used a network of small telescopes to discover a planet circling a far-off star. &quot;This discovery demonstrates that even humble telescopes can make huge contributions to planet
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With the help of a modified backyard telescope, astronomers have discovered a giant planet orbiting another star. It is the first extrasolar world found with such modest equipment.
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Earth-size planets form around other stars in a process that&#39;s considerably longer and more violent than previously believed, a team of astronomers using NASA&#39;s Spitzer Space Telescope announced Monday.
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A circumstellar disk of dust and gas, the raw material of a solar system, has been found circling the star TW Hydrae.
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Astronomers have discovered something they've never seen before: a star with a tail like a comet.
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NEW YORK Ever since 1960, when a Cornell University astronomer named Frank Drake pointed a radio telescope at a pair of nearby stars on the chance that he might hear a &quot;howdy&quot; from extraterrestrial beings, astronomers have persevered in the notion that
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For the first time, NASA scientists have observed planet-containing solar systems with disks of dust orbiting their central stars, astronomers announced Thursday.
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Two old stars appear to be generating planets long after the normal period, astronomers say.