We’re getting a great gift in our skies this holiday season with three bright planets — Saturn, Jupiter and Mars — decorating our evening skies. We also have some nice celestial conjunctions, or what ...
Earth's orbit defines the ecliptic, a line on the celestial sphere inclined 23.5° to the celestial equator, reflecting Earth's axial tilt. The Moon's orbit is inclined 5.1° to the ecliptic. The Moon's ...
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