Across the Milky Way, more planet Earths?
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Two new discoveries suggest that sunlike solar systems like ours â with life-hosting planets â are more common than previously thought.
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Scientists discuss their preferred targets for the next "flagship" mission to another world.
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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 - A new class of planets has been found orbiting stars besides our sun, in a possible giant leap forward in the search for Earth-like planets that might harbour life.
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A new wide-field sky survey known as SuperWasp discovers two planets orbiting far-distant stars.
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Tooling up in the hunt for aliens For the first time, astronomers have measured the composition of a planet outside the solar system, in what NASA says is a key step in its quest for extraterrestrial life.â¦
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A cotton candy-like cloud of simple sugar drifts in the unspeakably cold center of the Milky Way  about 26,000 light years away, offering a remote, yet tantalizing, hint of how the building blocks of life may have reached  Earth billions of years ago.
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Scientists have long believed that the planet is surrounded by a radiation belt. Now it's a confirmed fact. Compiled by Tony Long.
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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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28 new planets orbiting distant stars beyond our solar system are detected by an international team.
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Two separate teams of astronomers find Neptune-size planets beyond our solar system. Earth-like planets are just around the corner, they say. By Amit Asaravala.
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Among a batch of new planets, found by the Hubble telescope on a small patch of sky in Sagittarius, are as many as five that orbit their home stars in less than a day.
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Astronomers are claiming to have found a &quot;super-Earth&quot; orbiting a star some 50 light years away. They say the finding could significantly boost the hunt for worlds beyond our Solar System.
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The universe looked a little more familiar and friendlier. The roll call of planets beyond the solar system swelled significantly with the announcement of a trio of newly-discovered worlds much smaller than any previously discovered around other stars.
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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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Astronomers have discovered the three lightest planets known outside the solar system, moving researchers closer to the goal of finding extrasolar planets that resemble Earth.
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Want to boldly go all over the universe? With views of 100 million stars and 200 million galaxies, Google Sky lets you be a virtual space traveler with just a few clicks of a mouse. Here are some amazing images that are literally out of this world.