Started by Unbeliever, December 04, 2018, 07:53:42 PM
QuoteThanks to the hardworking Gaia spacecraft, astronomers think theyâ€™ve located a star that formed from the same solar nebula as the Sun. In fact, this star is a virtual twin of the Sun and itâ€™s actually pretty close. Well, astronomical speaking.
Quote from: Hydra009 on December 04, 2018, 08:06:29 PMAnd a mere 184 light years away.
Quote from: trdsf on December 04, 2018, 08:31:48 PMIf it proves to be an actual solar sibling and not just a star with similar chemistry, I should think the fact that we find it that nearby would suggest our sun was born of a large nebula. Alternately, maybe we shouldn't be surprised to find one nearby even 4.5 billion years later, simply because as a simple matter of all starting from the same place with broadly similar vectors, the sun and its siblings shouldn't have strayed all that far from each other.Is there an astrophysicist in the audience?
Quote from: Cavebear on December 05, 2018, 04:22:21 AMI've read enough serious science articles and seen enough science TV to have gotten the idea that common birth stars travel off in different paths around the galaxy to be far away from each other in a short (by galactic terms) time. The idea that stellar birth suns stay near is unlikely unless there is a specific long term gravitational relationship. Which is unlikely given the random gravitational influences of other stars, galactic revolutions, and the natural wobble of stars above and below the galactic plane. And not to mention dark matter.
Quote from: Unbeliever on December 05, 2018, 01:17:29 PMIt would be interesting to find that the star has planets, especially if there are any in the habitable zone. I doubt there's a second "Earth" there, though.
Quote from: Cavebear on December 09, 2018, 10:36:05 AMI consider that there are 2 possibilities of life in the universe. There might be just one (us). Or there might be 3 or more. But there can't be just 2.One is a fluke, not likely to be repeated. 3 or more suggests it is common. And if 3, multitudes...But you just can't have 2 "flukes"...So we are either alone or of multitudes...
Quote from: Baruch on December 09, 2018, 10:49:04 AMThere is no life. Just dead atoms moving randomly.
Quote from: Cavebear on December 09, 2018, 10:53:01 AMAtoms are neither alive nor dead. Try again... And, BTW, consider reading the Sept 2018 Scientific American mag. You will love it.