Galactic collision? Milky Way might not be doomed after all

Newly combined data shows Andromeda and Milky Way galaxies might not collide as previously assumed. The research puts chances of a galactic collision at 50/50.

See the best deep-sky photos of May 2025 here

Enjoy this gallery of deep-sky photos for May 2025 from our EarthSky community. If you have a great photo to share, send it in, too. We love to see them!

Did sunscreen help ancient humans survive a pole shift?

Did sunscreen help ancient humans when Earth's magnetic field grew dangerously thin some 41,000 years ago? A new study suggests it did.

Unusual star pulsing in X-ray and radio baffles scientists

Astronomers have discovered an unusual star that emits both radio and X-ray wavelength pulses at the same time, every 44 minutes.

Canadian wildfire smoke blankets huge swath of North America

Canadian wildfire smoke has been pouring into the United States, lowering air quality and turning skies black and gray, and the sun and moon red.

Weird! Titan’s atmosphere is wobbling like a gyroscope

Using data from NASA's Cassini mission, scientists have found that Titan's atmosphere is wobbling like a gyroscope. But they're not sure why.

Meet the adorable red panda, which isn’t really a panda!

The red panda is so peculiar! It is not a panda, it feeds mainly on bamboo but can't digest it, and it has a false thumb. What a Asian treasure!

Proposed NASA cuts to space science: “Staggering”

The White House's proposed NASA cuts would eliminate many existing and future space missions. Anyone from around the world can sign this petition.

Are the TRAPPIST-1 planets water-rich? New study says maybe

A new study suggests the 7 Earth-sized TRAPPIST-1 exoplanets could have widely varying amounts of water, ranging from very little to more than Earth.

Sun activity archive for June 2025

Sun activity archive for June 2025. A daily record of flaring, big filaments and prominences, and other sorts of activity, on our local star.