Water Worlds: Astronomer Predicts Many Earth-Like Planets      (SPACE.com / LiveScience.com)
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SPACE.com / To most common terrestrial dwellers, there's no place like Earth. But new simulations show that many Earth-like planets might exist outside of our solar system.
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Is there really life out there?  Was a kinder, wetter Mars once dotted by bacterial blooms whose progeny now await our discovery?  Do unseen, alien microbes swim in the buried oceans of Europa, Callisto, or Ganymede?  What about Titan's sub-zero methane lakes?
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Astronomers suspect the early Earth was a very harsh place. Temperatures were extreme, and the planet was constantly bombarded by cosmic debris. Many scientists believe that life's starting materials, or building blocks, must have been very resilient to have survived this tumultuous environment.
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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 fabled tenth planet out beyond Neptune, often referred to as Planet X, hasn't    been found despite years of searching. But astronomers involved in the hunt    are beginning to speculate that something like Planet X will be discovered,    along with Y and Z.
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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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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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By JOSEPH B. VERRENGIA     -- Astronomers have discovered four new planets in a week's time, an exciting end-of-summer flurry that signals a sharper era in the hunt for new worlds...
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Astronomers have discovered four new planets in a week's time, an exciting end-of-summer flurry that signals a sharper era in the hunt for new worlds.    While none of these new bodies would be mistaken as Earth's twin, some appear to be noticeably smaller and more solid - more like Earth and Mars - than the gargantuan, gaseous giants identified before...
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Astronomers find a strange new world that has them pondering again the essential properties of a planet.
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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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The leading theory of how planets form is being revised because of new observations from the US Spitzer Space Telescope. The process is not as smooth and quiet as once thought, but rather the result of violent collisions between massive space rocks.
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Blog: Some wet areas of earth will get wetter with climate change.
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By SETH BORENSTEIN  WASHINGTON - Scientists taking their first "sniffs of air" from planets outside our solar system are a bit baffled by what they didn't find: water.
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Scientists find water on a distant planet. Someday, maybe they'll find life
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The Milky Way is a vast, diverse neighborhood. If you're hoping to find Earthlike planets that may harbor life, you'll need to narrow the search. Stars are a good place to start, because the dusty discs around stars spawn young planets.
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Scientists are planning to take the pulse of the planet -- and more -- in an effort to improve weather forecasts, predict energy needs months in advance, anticipate disease outbreaks and even tell fishermen where the catch will be abundant.