“When all thermonuclear sources of energy are exhausted a sufficiently heavy star will collapse. Unless fission due to rotation, the radiation of mass, or the blowing off of mass by radiation, reduce the star's mass to the order of that of the sun, this contraction will continue indefinitely.”
Quote by J. Robert Oppenheimer
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“Astronomy, as nothing else can do, teaches men humility.”
Source: Report on Planet Three
Source: Carl Sagan: a life
Source: Signals from the Stars
Source: On The Heavens
