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

Daylight hours have been lengthening since late December, with February seeing a faster increase in sunlight. Northern regions experience a more dramatic change, while areas closer to the equator see ...

Soon, the dark winter months will end, and spring will begin. Here's everything you need to know about Daylight Saving Time.

As the face of the dial is parallel with the celestial equator, its edge forms an arUfcial horizon, along which the sun apparently travels. Because the sun mounts above the celestial equator in ...

Without the axial tilt, the sun would remain directly about the Equator, and everywhere on the planet would receive the same amount of light the year through. During the Winter Solstice ...

Spring - brought on by the March equinox - is only a few weeks away. You can also count down the days to spring in real time.