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April 07, 2011

Possibly Two Billion "Alien Earths"

Figured this would be really relevant to us, especially since we just covered the Drake equation in section this week.

From observing, not any equation, the estimate to how many Earth like planets that may exist in our galaxy alone exceed TWO BILLION. This number is huge! Think of the possibilities.

If this many Earth-like planets exist in habitable zones (zones where liquid water is possible) the chances for alien life enormous. And.. possibly, intelligent life. This is the estimate for our galaxy alone, and there are 50 billion other galaxies.

I STRONGLY encourage anyone that reads this post to also read the article. It's truly amazing.

www.mnn.com/earth-matters/space/stories/new-estimate-for-alien-earths-2-billion-in-our-galaxy-alone

Posted by strodel at April 7, 2011 03:52 PM

Comments

After looking at the article, I feel a little more optimistic in my thought of life on other planets. It says 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. A pretty low percentage, but that still would be a significant amount. I think my Drake equation from lab would be a little higher after reading this.

Posted by: scottymg at April 10, 2011 11:39 PM

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