The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to ...
Edwin Hubble (1889â 1953) was a groundbreaking astronomer whose work transformed our understanding of the cosmos. Known as the father of extragalactic astronomy, he discovered that our ...
Photo: Andromeda nebula plate with Hubble's handwritten circle around the variable star he discovered In 1919 American astronomer Edwin Hubble began work at the Mount Wilson Observatory in ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果