One of the first of the second stars

摘要

How did the first stars form early in the history of our Galaxy and the Universe, and what were these stars like? The Big Bang produced only hydrogen, helium and some lithium, so the first stars would have contained only those elements. Given that the stars became extinct long ago, they were probably quite massive - the more massive a star (with masses more than 80 times that of the Sun a possibility), the shorter its lifetime (as little as a few million years).