Astronomy
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deuterium
differential galactic rotation
differential rotation
Differentiation
disk
dispersion
distance
DNA (deoxyribonucleic acid)
Doppler
Doppler effect
Doppler shift
Drake
Drake equation
Draper
Dreyer
dwarf planet
Eagle Nebula
Earth-approaching asteroids
Earth’s atmosphere
Earth’s crust
Astronomy
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Astronomy
is licensed under
Creative Commons Attribution
Copyright (c) 2019 High Castle Tech LLC
