Astronomy
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absorption spectrum
accelerate
accretion
accretion disk
active galactic nuclei (AGN)
active galaxies
active region
Adams
adaptive optics
afterglow
Alcor
Algol
Allen Telescope Array
Alpha Centauri
Alpher
Amino acids
Andromeda galaxy
angular momentum
Ant Nebula
anthropic principle
Astronomy
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Astronomy
is licensed under
Creative Commons Attribution
Copyright (c) 2019 High Castle Tech LLC
