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Title: Where was most of the helium in the universe created? Post by: staedtler on Mar 21, 2017 Where was most of the helium in the universe created?
A) By nuclear reactions in the cores of stars, and was then thrown out into space by supernovae B) By high-energy processes during the collapse of pregalactic clouds during the formation of galaxies C) By nuclear reactions during the first three minutes following the Big Bang D) By the collision of cosmic rays with hydrogen nuclei in interstellar gas clouds Title: Re: Where was most of the helium in the universe created? Post by: papachulo on Mar 21, 2017 Content hidden
Title: Re: Where was most of the helium in the universe created? Post by: staedtler on May 1, 2017 On behalf of my study group and I, thank you
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