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New Estimate for Alien Earths: 2 Billion in Our Galaxy Alone
Posted By admin On March 24, 2011 @ 4:52 am In Sci Tech | Comments Disabled
Charles Q. Choi,
March 24, 2011
Roughly one out of every 37 to one out of every 70 sunlike stars in the sky might harbor an alien Earth, a new study reveals.
These findings hint that billions of Earthlike planets might exist in our galaxy, researchers added.
These new calculations are based in data from the Kepler space telescope, which in February wowed the globe by revealing more than 1,200 possible alien worlds , including 68 potentially Earth-size planets. The spacecraft does so by looking for the dimming that occurs when a world transits or moves in front of a star.
Scientists at NASA’s Jet Propulsion Laboratory in Pasadena, Calif., focused on roughly Earth-size planets within the habitable zones of their stars — that is, orbits where liquid water can exist on the surfaces of those worlds. [The Strangest Alien Planets ]
After the researchers analyzed the four months of data in this initial batch of readings from Kepler, they determined that 1.4 to 2.7 percent of all sunlike stars are expected to have Earthlike planets — ones that are between 0.8 and two times Earth’s diameter and within the habitable zones of their stars.
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URL to article: http://www.prisonplanet.com/new-estimate-for-alien-earths-2-billion-in-our-galaxy-alone.html
URLs in this post:
 SPACE.com: http://www.space.com/11188-alien-earths-planets-sun-stars.html
 1,200 possible alien worlds: http://www.space.com/10742-kepler-exoplanets-data.html
 The Strangest Alien Planets: http://www.space.com/159-strangest-alien-planets.html
 Stock up with Fresh Food that lasts with eFoodsDirect (AD): http://www.efoodsdirect.com/
 Image: http://purewaterfreedom.com/
 Alien life boost after Nasa finds one in two Suns has Earth like planets: http://www.prisonplanet.com/alien-life-boost-after-nasa-finds-one-in-two-suns-has-earth-like-planets.html
 New ‘life in space’ hope after billions of ‘habitable planets’ found in Milky Way: http://www.prisonplanet.com/new-life-in-space-hope-after-billions-of-habitable-planets-found-in-milky-way.html
 BILLIONS of habitable planets may be lurking in the Milky Way: http://www.prisonplanet.com/billions-of-habitable-planets-may-be-lurking-in-the-milky-way.html
 Galaxy has ‘billions of Earths’: http://www.prisonplanet.com/galaxy-has-billions-of-earths.html
 First cosmic census estimates there are 50 BILLION planets in Milky Way: http://www.prisonplanet.com/first-cosmic-census-estimates-there-are-50-billion-planets-in-milky-way.html
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