
In the early 1970s Princeton University astrophysicist Jeremiah Ostriker was puzzling over telescope observations of distant galaxies. These spinning cosmic discs did not contain nearly enough stars and other visible material for gravity to hold them together. The answer, he realised, must be that a much larger mass of unobserved “dark matter” stopped them flying apart.
在20世紀70年代初,普林斯頓大學(Princeton University)的天體物理學家杰里邁亞?奧斯特里克對遙遠星系的望遠鏡觀測感到困惑。這些旋轉的宇宙圓盤中幾乎沒有足夠的恒星和其他可見物質來通過引力將它們聚集在一起。他意識到,答案一定是有更大質量的未被觀測到的“暗物質”阻止了它們分崩離析。
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