Originally Posted by
Locke4God
Yeah, they exist. There are billions of billions of stars and most with a set of planets, and it only takes one of those that is the approximate distance away as we are from a similar sized sun as we have to qualify. There must be a billion such planets, and I'd bet nearly all of them have life of some sort. Intelligent life is another question.
If you look at the relationship of a star to its planets you'll know that the star is burning because it is fuzing atoms together, essentially burning until its built it's atoms into the next element on the periodic table. So it burns Hydrogen until it turns to Helium, and so on and so forth. When the process is completed, once the naturally occuring periodic table of elements have been formed, the star supernovas.
Before that however, when the star was born, it shot out elements into the space surrounding it. Those congregated at certain distances based on density, just as elements would in a centrifuge. That's why Mercury, Venus, Earth, & Mars are similiar, and then Jupiter, Uranus, & Neptune are gas planets. The elements spread out.
So it's just a matter of physics. Every star system would undergo a similar pattern, and those most similar to us would have an earth or two at an approximate distance as we are from the sun, and thus would be highly likely to contain life.
The problem is, we're 10's of millions of light years away from that next closet system.
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