Rocky Road: Planet hunting gets closer to Earth
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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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A pair of robots named ASTRO and NextSat have been working together in Earth orbit, docking, undocking, flying around and refueling, as if they have minds of their own.  Their adventures may herald a revolution in the way we explore space.
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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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The collisions that spawn planets are bigger and take place over longer periods of time than previously thought, say astronomers who studied nearly 300 stars with NASA&#39;s Spitzer Space Telescope.
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A tiny telescope has spotted a giant planet circling a faraway star, using a technique that could open a new phase of planetary discovery, scientists said.
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Astronomers have found the latest planet in another solar system â-r &quot;exoplanet&quot; â -ng telescopes no bigger than those you might find at a garage sale.
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A team of astronomers announced last week the discovery of some of the smallest planets yet detected beyond our solar system. The two newly discovered planets represent a new class of extrasolar planets, and
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British researchers detect water in atmosphere of planet that circles star far beyond our solar system.
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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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Itâs that time of year on the distant planet â when its ring system appears edge-on to observers on Earth.
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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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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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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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An asteroid with a wild orbit is about to zoom by our planet. Plus: Solving the mystery of the Pioneer anomaly could take decades.... A biologist finds a chunk of space shuttle Columbia. By Amit Asaravala.
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European astronomers reported Thursday the discovery of a rocky &quot;super Earth-like object&quot; orbiting a nearby star much like our own sun.
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WASHINGTON - A tiny telescope has spotted a giant planet circling a faraway star, using a technique that could open a new phase of planetary discovery.