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Aliens Will Be Bear-Size, According to Math

 

With thousands of planets outside Earth’s solar system, there’s a pretty good chance that some of them have the conditions needed for life. If alien life does exist, scientists aren’t quite sure what it would look like, but they might be able to see how much these foreign “beings” might weigh. Most of these creatures will be big — on the order of 660 lbs. (300 kilograms), one cosmologist says.
http://www.livescience.com/50864-aliens-will-be-bear-size.html