Jan 5 -- MasteringAstronomy Seasons
elongated ellipse -- fast on the near side and slow on the far side
directness
tropic of cancer
tropic of capricron
arctic circle
antarctic circle
solstice
equinox
hemispare
discrepancy
directness
tropic of cancer
tropic of capricron
arctic circle
antarctic circle
solstice
equinox
hemispare
discrepancy
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