Phil Plait, the Bad Astronomer, explains why a black hole has so much gravity.
posted by dbalsdon 1 decade 6 years 3 months 3 weeks ago • 7,821 viewsScience Stuff
Created: 1 decade 6 years 5 months 2 weeks ago
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Updated: 1 decade 3 years 6 months ago
Views: 2,103