posted on Nov, 4 2013 @ 08:22 PM
reply to post by mitman93
Interesting article but you shouldn't make up your own title which is different from what the article says. It's referring to stars like our sun, and
you're referring to stars we can see at night. We see other stars at night which are not like our sun, so one doesn't necessarily infer the other.
About 7.6% of stars in the Milky Way are the same yellow type as our sun according to this:
Moreover, the yellow-white, white, and blue-white stars are seen in greater frequency than their proportion would suggest, because they are typically
brighter, so even the 7.6% figure is misleading if you're talking about what "stars you can see at night".
So, one calculation inferred from the article would be that 22% of sun like stars have Earth like planets orbiting them, and since 7.6% of stars in
the Milky Way are the same type as our sun, this is only 1.67% of stars in the Milky Way. Of course they don't say what the percentage of Earth like
planets are orbiting stars not like our sun, and besides it's sort of a shoot from the hip estimate anyway so there's no point in trying to be overly
precise, but there is a difference between 22% versus 1.67% which matters even in a shoot from the hip estimate.
Anyway I liked the quote from Jill Tartar:
Jill Tarter, a pioneer in “SETI,” the search for extraterrestrial intelligence, said in an e-mail: “We haven’t yet found Earth 2.0, but
these statistics suggest that it should be forthcoming, and soon. When we can point to Earth 2.0 in the sky, it will seem completely natural to ask
‘Does anybody live there?’ and ‘Can we go there?’ I think Earth 2.0 will concretize SETI as nothing else has.”
Edit: I see bedlam beat me to it and posted the same thing while I was still writing my reply. Way to go bedlam.
edit on 4-11-2013 by
Arbitrageur because: clarification