According to a new theoretical study, most Earth like planets in the universe have yet to be formed. Approximately only 8% of earth like planets that will form have existed. Scientists theorize that even though the rates of star formation has slowed compared to earlier periods in the universe, there will be plenty of base elements from which planets may be formed. In the Milky Way galaxy alone, there are an estimated 1 billion Earth like planets. If you were to include the innumerable amount of other galaxies in the observable universe, that number quickly exponentiates. There definitely has to be some sort of humanoid life form on one of those planets. Even though the universe is relatively young, compared to its estimated 100 trillion year lifespan, it is doubtful we are the most advanced civilization in the universe. It's only a matter of time before we have an extraterrestrial encounter. -lol
I thought this article was really interesting and put the size of the universe in perspective. The world is a big place but space is HUGE.
Source: http://www.nasa.gov/feature/goddard/most-earth-like-worlds-have-yet-to-be-born-according-to-theoretical-study
3 points. The universe is ~14 billion years old. Where did you get the 100 trillion year number for the "lifespan"?
ReplyDeleteI'm not sure it's "definite" that there are other human-like life forms out there. But I do think that it's likely that something must be out there. Check out my previous post on this:
http://phys111ucr.blogspot.com/2012/01/toward-solving-drake-equation.html