But in 1930 the Indian physicist Subrahmanyan Chandrasekhar realized that there is a problem with this. Stuck on a boat sailing from India to do his doctoral studies in Cambridge, Chandrasekhar recognized that special relativity puts a speed limit on how fast these particles can move. So if the mass of the star is great enough, gravity will win out over this speed limit and the star will continue to collapse, creating a region of space of increasingly high density. His calculations made on board ship revealed that any star that was more than 1.4 times the mass of our Sun would suffer such a
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