The August 20-21, 2013 full moon will be called a Blue Moon. Wasn’t there a blue moon just last year? Learn why Blue Moons aren’t so rare anymore.

In 2013, the vernal or spring equinox comes on March 20 at 11:02 Universal Time (6:02 a.m. Central Daylight Time). Happy spring (or fall), y’all!

For both the Northern and Southern Hemispheres, the full moons have names corresponding to the calendar months or the seasons of the year.

The next meteor shower is the Lyrid shower, peaking on the morning of April 22, 2013.

Punxsutawney Phil failed to see his shadow on this Groundhog Day 2013. According to the legend of Groundhog Day, that means we’ll have an early spring.

The narrow peak of the 2013 Quadrantid meteor shower is likely January 3 – but it might be as late as January 4, if you’re in Asia.

A wondrous star is said to have appeared over the birthplace of Jesus in Bethlehem. It has grown to be a major symbol of Christmas around the world. But is the star fact or fiction?

Today is the December solstice. Longest night in Northern Hemisphere. Longest Day in Southern Hemisphere. Celebration time!

The peak of the Geminid meteor shower is past – but only barely. If you watch late tonight or in the wee hours tomorrow, you should still see some meteors.

The December Geminid meteor shower radiates from the constellation Gemini — in the east in mid-evening or overhead by about 2 a.m.