New class of planets found
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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.
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Two Neptune-sized planets have been discovered circling stars beyond our Solar System, US astronomers reported on Tuesday. The discoveries, which come less than a week after a similar announcement by European
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The 130 extrasolar planets discovered so far are in solar systems very different from our own, in which life-bearing planets like Earth are unlikely to exist. But an obscure characteristic of these planets and their stars has led astronomers to predict that our galaxy is brimming with solar systems like ours. The key to their prediction is something called metallicity.
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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 round in a frenzied hunt for other worlds like Earth.    All three of these smaller planets belong to a new class of "exoplanets" - those that orbit stars other than our sun, the scientists said in a briefing Tuesday...
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These are heady times for planet hunters. During the past decade, astronomers have uncovered at least 125 confirmed planets in 98 solar systems in our corner of the Milky Way.
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It may take much longer than scientists have thought for violent turbulence to turn grains of space dust into new planets. A NASA telescope recently discovered
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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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A newfound planet detected by a small, 4-inch-diameter telescope demonstrates that we are at the cusp of a new age of planet discovery. Soon, new worlds may be located at an accelerating pace, bringing the detection of the first Earth-sized world one step closer.
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Five new moons have been discovered orbiting the giant planet Neptune.
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BOSTON American scientists say they have discovered two of the smallest planets ever detected outside our solar system - a sign, they said, that they are on the right track in the quest to find Earth-like planets that could potentially support life.
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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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A group of European-led    astronomers has made a photograph of what appears to be a planet orbiting another    star. If so, it would be the first confirmed picture of a world beyond our solar    system.
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Rocky planets with conditions suitable for life may be more common than previously thought, a study finds
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Advances in planet-hunting technology lead to the discovery of more planets -- plus seven brown dwarfs -- outside our solar system.
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A trio of newly discovered worlds are much smaller than any other planets previously discovered outside of the solar system.
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The first hard evidence of water outside our solar system is found on a new giant gas planet.
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Astronomers discover a newborn planet in a solar system that is still in the process of forming.