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When’s the first day of spring? All you need to know
While astronomical spring doesn't start until March 20, meteorologists and climatologists use March 1 as the first day of spring for consistency.
March 1, 2026
The Beehive Cluster: A swarm of 1,000 stars
The Beehive Cluster is an open star cluster that lies near the center of the constellation Cancer the Crab. It goes by many names, including Praesepe and M44.
March 1, 2026
Sun activity archive for March 2026
Sun activity archive for March 2026. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.
March 1, 2026
A total lunar eclipse looks red. Why?
Coming up ... the total lunar eclipse of March 2-3, 2026. At maximum eclipse, the moon will look red. But why? Earth's atmosphere is the key.
March 1, 2026
March birthstone: Beautiful cool blue or blood red?
Happy birthday to all you March babies! Take your pick: your March birthstone can be the blue aquamarine or the red-speckled bloodstone.
March 1, 2026
February 28 planet parade? Here’s what you’ll really see
Rumors of a February 28 planet parade are sweeping the internet. Will you be able to see 6 planets in a line? Get the details here.
February 28, 2026
Leap years, and why 2026 isn’t one
If there were no leap years, eventually February would be a summer month for the Northern Hemisphere. The why and when of leap years, here.
February 27, 2026
Giant ‘spiderwebs’ on Mars reveal surprising water clues
NASA's Curiosity rover has been investigating 'spiderwebs' on Mars. Groundwater formed these grid-like formations of ridges billions of years ago.
February 27, 2026
What is orbital resonance? A dance between heavenly bodies
What is orbital resonance? It's a precise dance between heavenly bodies when their orbits line up, causing them to have specific synchronicities.
February 27, 2026
A mud volcano erupted in Colombia on Wednesday night
A mud volcano erupted in Colombia on the evening of February 25, 2026. No one was injured but some livestock were killed. See the eruption here.
February 26, 2026
