The Earth’s tilt means we experience four seasons as we orbit the Sun. So, starting with winter in the northern hemisphere, the Earth moves round and the days get longer and warmer until it ...

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

Meteorological and astronomical seasons begin and end on different ... year on either Dec. 21 or Dec. 22. The Earth is tilted 23.5 degrees. That tilt and the sun’s alignment over the equator ...

One of the most important consequences of Earth's axial tilt is the seasons. Seasons happen because the tilt points different parts of the planet toward the sun at different times of the year.

The fall equinox comes this Wednesday at 3:21 p.m. ET. The day heralds the start of autumn in the northern hemisphere, which houses about 90% of Earth's population. For the southern hemisphere, it ...