20世纪初, 斯里弗尔(Slipher) (1875-1969) 在观测银河系外的仙女座大星云时,取得15个星系的光谱资料, 经过研究,发现其中13个正在以每秒几百公里的高速退行...
基于8个网页-相关网页
That year, an observatory official,V.M.Slipher, offered a young man a job working with the new telescope.
VOA: special.2010.07.11
On March thirteenth, Clyde Tombaugh and V.M Slipher announced the discovery of a new planet.
VOA: special.2010.07.11
Evidence that the universe is expanding was first discovered at Lowell Observatory by V.M.Slipher.
VOA: special.2010.07.11
应用推荐