ASTRONOMY'S GREATEST STORIES 2015

摘要

It may have had little fanfare, but one of the most perplexing problems of modem cosmology and astrophysics was solved this year. For decades scientists had puzzled over where all the lithium in stars had disappeared to. In the aftermath of the Big Bang, hydrogen, helium and lithium were the only three stable elements to from. Yet older stars have lithium abundances of only a third of what the Big Bang predicets. Was our Big Bang wrong, or was something else gomg on inside these stars?