Extensive ancient rivers on Mars revealed in new study

A new study of data from 2 Mars orbiters shows vast ancient rivers on Mars in the Noachis Terra region. They show Mars was even wetter than we first thought.

Young, massive exoplanet is in an unusual double star system

HD 135344 Ab is a young massive exoplanet orbiting a star in a binary star system 440 light-years away. The other star still has its planet-forming disk.

‘Unicorn’ long-period radio transient baffles scientists

Astronomers have discovered a long-period radio transient with theory-defying properties. It's incredibly polarized, and its spin appears to be speeding up.

Newborn planet spotted sculpting a spiral around its star

Astronomers have found evidence for a newborn planet 440 light-years away, sculpting spiral arms in the disk of gas and dust around its young parent star.

Companion for Betelgeuse confirmed! Beloved red star has a blue-white buddy

Astronomers using the Gemini North telescope have confirmed a companion for Betelgeuse! It's a blue-white star and orbits within Betelgeuse's outer atmosphere.

Asteroid 2025 OS safely buzzed by Earth this weekend

Astronomers discovered asteroid 2025 OS on July 19, 2025. The small asteroid passed closest to us on July 18 and posed no danger to Earth.

A hidden molecular cloud near our Milky Way’s center

Researchers have discovered a hidden molecular cloud in our Milky Way galaxy near its central bar. The area is likely a region of star birth.

Biggest black hole merger ever breaks the universe’s rules

Cutting-edge gravitational wave detectors have found most massive black hole merger yet. Discoverers say it defies our understanding of how black holes form.

Witnessing a solar system’s dawn, for the 1st time

Astronomers have witnessed a solar system's dawn. They see the 1st specks of planet-forming material: hot minerals just beginning to solidify.

Did Webb find a black hole formed by a direct collapse?

Astronomers used data from Webb to probe a black hole that might have formed from direct collapse between two interacting galaxies.