Nowadays, the dark of night is interspersed with the light of stars. But before the stars were born, did light shine at the ...

Did light shine in the universe’s earliest moments, or was it hidden from view? While this question may seem simple at first, ...

But the influence of high-energy ultraviolet light, which would have bombarded the surface of early Earth because the planed lacked an ozone layer, has never been considered as a selection ...