First Brown Dwarf in Planetary System Found
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Cambridge, MA - Scientists using NASA's Spitzer Space Telescope have discovered and directly imaged a small brown dwarf star, 50 times the mass of Jupiter, orbiting with a planet around a Sun-like star.
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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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It is the first planetary system that really looks like our own, with outer giant planets and room for smaller inner planets, astronomers say.
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Astronomers  have spotted a planet that has survived the massive ballooning of its parent  star, providing the first optimistic evidence for the long-term survival of  Earth.
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When a binary star system starts to transfer mass, one of the twins may well win out, leaving its companion to occupy a strange region half way between a star and a planet. A new star-type of this sort has been found, which resembles the infrared ash of a stillborn star.
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HONOLULU-Astronomers have discovered 28 new planets outside of our solar system, increasing to 236 the number of known exoplanets, revealing that planets can exist around a broad spectrum of stellar types-from tiny, dim stars to giants.
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Astronomers using NASA's Hubble Space Telescope have photographed one of the smallest objects ever seen around a normal star beyond our Sun. Weighing in at 12 times the mass of Jupiter, the object is small enough to be a planet.
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What might be the first directly visible planet orbiting a starlike body other than our sun was reported by scientists from Europe and Los Angeles on Friday.
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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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In a solar system thousands of light years away, a star about half the size of our sun is being orbited by two planets that seem like smaller versions of Jupiter and Saturn, astronomers report
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Aug. 31, 2004 - American astronomers say they have discovered the two smallest planets yet orbiting nearby stars, trumping a small planet discovery by European scientists five days ago and capping the latest
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Cold, dusty discs of debris have been clearly detected around stars in other planet-harbouring solar systems for the first time by NASA&#39;s Spitzer Space Telescope.
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Astronomers have discovered a new class of planets that take less than a day to whiz round their parent stars.
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Astronomers say they have discovered the largest planet ever found, a supersize gas giant about 1.4 times the size of Jupiter that's unlike any other known world.
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Washington, DC- Using a network of small automated telescopes known as HAT, Smithsonian astronomers have discovered a planet unlike any other known world.
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Â· Dwarf planet is not even the biggest of its type Â· Eris, body that reopened debate, is heavier
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small-mass planets soon,&quot; said Paul Butler of the Carnegie Institution of Washington, the co-discoverer of one of the new planets.