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.

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.

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.

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.

Can Dyson spheres be stable? New research says yes

A new study says that Dyson spheres - and, similarly, ringworlds - could be stable in a two-star system. Read more about them and their impact on SETI.

Tantalizing dark streaks on Mars are bone-dry, study says

What are the mysterious dark streaks on Mars seen flowing down steep slopes? A new study using machine learning suggests they are caused by dry dust, not water.

What is this weird sphere in space astronomers found?

An international team of astronomers has found an odd sphere in space. The almost perfectly round bubble-like object is most likely a supernova remnant.

Strange double starlight pulses revealed in new SETI search

A SETI search of 1,300 stars for optical alien signals has found something odd: two fast, identical starlight pulses from a sunlike star 100 light-years away.

Stargazing in national parks around the world

Stargazing in national parks ... yes! Increasing light pollution in the United States makes national parks some of the last dark refuges.

New minor planet found in the distant solar system

The IAU's Minor Planet Center announced a new minor planet on May 21, 2025, which is fairly large and has a huge, irregular orbit around the sun.