Jeremiah P. Ostriker

If you take a galaxy and try to make it bigger, it becomes a cluster of galaxies, not a galaxy. If you try to make it smaller than that, it seems to blow itself apart.
If you take a galaxy and try to make it bigger, it becomes a cluster of galaxies, not a galaxy. If you try to make it smaller than that, it seems to blow itself apart.
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These are some quotes by American author Jeremiah P. Ostriker Scientist, who was born on April 13, 1937.