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Full moon names of the month and by the season

Lists of common full moon names - both by month and by season - for North America. And a word about full moon names in the Southern Hemisphere.

Editors of EarthSky

February 1, 2026

Happy Groundhog Day! Will Phil see his shadow?

The predicted high for Punxsutawney, Pennsylvania, on February 2, Groundhog Day, is 24 degrees F (-4 C) and cloudy. Will Phil see his shadow?

Editors of EarthSky

February 1, 2026

The moon’s terminator line divides night and day

The moon’s terminator line divides day and night on the moon. As we see it from Earth, it marks the line of lunar sunsets or sunrises. Read more.

Kelly Kizer Whitt

January 25, 2026

Venus in the daytime: Best ways to see it

You can spot Venus in the daytime. One of the best ways is when its near the moon. Here are the tips to help you spot the brilliant planet Venus in daylight.

Editors of EarthSky

January 23, 2026

Which Milky Way spiral arm contains our sun?

Where do we live in the Milky Way galaxy? We lie between the major arms in a smaller spiral arm known as the Orion Arm. See diagrams here.

Editors of EarthSky

January 22, 2026

Here’s what ‘habitable’ means to astronomers

When astronomers say a distant world is 'habitable,' what do they mean? Do they mean humans could live there? Do they mean we've discovered alien life?

Kelly Kizer Whitt

January 18, 2026