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National Radio Astronomy Observatory

public.nrao.edu ↗ Research observatory Reliability · Strong

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Space Stars & Galaxies

Betelgeuse is so big that if it replaced the Sun it would swallow the planets out to Jupiter

70 sec read

Space Astrophysics

Nothing can escape a black hole's event horizon, not even light

70 sec read

Space Astrophysics

The fastest known star spins 716 times every second

50 sec read