- Massive collision created Mercury, new theory suggestsby Paul Scott Anderson on March 31, 2025 at 10:10 am
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.
- This amazing hummingbird chick looks like a caterpillarby Cristina Ortiz on March 31, 2025 at 10:00 am
Hummingbirds might be small, but they have interesting protections. A hummingbird chick species is born with feathers similar to dangerous caterpillar hair. The post This amazing hummingbird chick looks like a caterpillar first appeared on EarthSky.
- Sun news: Powerful region continues its flaring reignby C. Alex Young on March 31, 2025 at 9:33 am
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 flares. The post Sun news: Powerful region continues its flaring reign first appeared on EarthSky.
- Visible planets and night sky guide for March and Aprilby Marcy Curran on March 31, 2025 at 7:00 am
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.
- Asteroid 2024 YR4 won’t hit in 2032, but it will be backby EarthSky Voices on March 30, 2025 at 11:36 am
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.
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The star at the top of Leo’s head has lots of aliases. Its formal name is Algenubi – from a longer Arabic name that means “the southern star of the lion’s head.” But most astronomers call it by its “Bayer” name – Epsilon Leonis. That naming system was devised centuries ago, using […] The lion springs high across the sky on spring evenings. Leo is led by Regulus, one of the brighter stars in the night sky. It represents the lion’s heart or one of his front paws. And it really is an impressive star – bigger, brighter, and heavier than the Sun.
The star at the lion’s tail is […] A partial solar eclipse will dim the skies over the northeastern United States early tomorrow – weather permitting, of course. Other parts of the world will have a slightly better view, including much of Europe and Asia.
A solar eclipse happens when the new Moon passes directly between Earth and […] Those are the sounds of cosmic attacks – massive storms on the Sun firing energy and particles into Earth’s magnetic field. Such outbursts can damage orbiting satellites, cause radio blackouts, foul GPS signals, and even knock out power grids on the surface. And there are indications that we […] The star cluster Messier 3 is a beautiful sight – a sparkly ball of half a million stars. But the view from the cluster would be even more spectacular. M3 is high above the plane of the Milky Way, so the galaxy would spread out below it like a brilliant pinwheel.
M3 is a globular cluster – a […]