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semimajor axis
SETI
Seyfert
Shapley
short-duration gamma-ray burst
sidereal day
sidereal month
singularity
Sirius
Slipher
Sloan Digital Sky Survey
Small Magellanic Cloud
SN 1006
SN 1054
solar atmosphere
solar cycle
solar day
solar dynamo
solar eclipse
solar flare
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Astronomy
is licensed under
Creative Commons Attribution
Copyright (c) 2019 High Castle Tech LLC
