The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...

The Projection Of Earth’s Poles Into Space…. Celestial Equator: The Imaginary East-West Line That Bisects The Celestial Sphere Into Northern And Southern Halves. The Projection Of Earth’s Equator Into ...

Astronomical seasons are based on the Earth's position ... This equinox happens when the sun crosses the celestial equator, an imaginary line above the Earth’s equator, going from south to ...

Skywatchers in central Florida and southern Texas can witness a rare lunar standstill on Feb. 7, as the waxing gibbous moon ...