In addition to refraction hastening sunrise and delaying sunset, there is another factor that makes daylight longer than night at an equinox: sunrise and sunset are defined as the times when the first ...

The leaves began changing colour and temperatures dropped earlier this month, signalling the shift to fall. However, ...

Equinoxes occur when Earth reaches a point in its orbit where the sun shines directly on the equator. This happens twice a ...

Today marks the autumnal equinox, or the first day of astronomical fall. Have you ever wondered why it occurs on a different ...

Discover why summer ends and the role Earth's tilt plays in seasonal changes. Learn about the summer solstice, autumnal ...