Researchers might have solved the mystery of Mercury's origin. They say Mercury formed from a huge collision between 2 similarly-sized rocky bodies. The post Massive collision created Mercury, new theory suggests first appeared on EarthSky.

Hummingbirds might be small, but they can have strong defense mechanisms. One hummingbird species is born with feathers resembling dangerous caterpillar hair. The post This amazing hummingbird chick looks like a caterpillar first appeared on EarthSky.

See some beautiful partial solar eclipse pics from March 29, 2025, thanks to our global EarthSky community! Did you take a pic? Submit it to us! The post Partial solar eclipse pics that you’ll love. See them here! first appeared on EarthSky.

Sun news March 31, 2025. Sunspot region AR4048 remains the most prolific flare producer with 23 flares over the past day, 5 of which were M (moderate) flares. The post Sun news: Powerful region continues its flaring reign first appeared on EarthSky.

Visible planets and night sky guide. This evening, watch for the slender waxing crescent moon in the western twilight sky. The post Visible planets and night sky guide for March and April first appeared on EarthSky.

Asteroids like 2024 YR4 - which is set to pass very close to Earth in 2032 - will keep coming back into our vicinity, thanks to a strange orbital resonance. The post Asteroid 2024 YR4 won’t hit in 2032, but it will be back first appeared on EarthSky.

A study examined residential trees in Switzerland and found a significantly lower mortality risk in people who live in neighborhoods with large tree canopies. The post New study says residential trees can affect human health first appeared on EarthSky.

Millions of Americans are under the threat for severe weather Sunday and Monday. Damaging wind gusts, large hail and significant tornadoes are all possible. The post Widespread severe weather expected in east-central US today first appeared on EarthSky.

How to find the Big and Little Dipper in the nighttime sky. From the Northern Hemisphere the Big Dipper is high in the sky on spring evenings. The post The Big and Little Dipper: How to find them in the spring first appeared on EarthSky.

Watch the deep partial solar eclipse on Saturday, March 29, 2025, at EarthSky. Or join our expert eclipse watchers for more. The post A deep partial solar eclipse on March 29. Watch here. first appeared on EarthSky.