Lisa Grossman

A space satellite that would offer light on demand has astronomers asking: Who controls the night sky?

A century of hints has suggested the famed red supergiant had a star pal but seeing it amid Betelgeuse’s brightness has been hard — until now.

Prior moon rock samples, including from Apollo, seem heavily influenced by one impact. The farside samples tweak the story.

The object orbits a brown dwarf that orbits a star, and astronomers aren’t sure if it’s a planet, a moon — or something else entirely.

Astronomers found a helium atmosphere around a rocky exoplanet — a good sign for the search for life outside the solar system.

The brine-formed meteorite that crashed into a New Jersey roof in 2024 could teach us about how life first arrived on Earth.

The Euclid space telescope discovery could help researchers understand how black holes grew so massive so quickly in the early universe.

Two “superpuff” planets orbiting a sunlike star over 1,000 light-years from Earth are as big as Jupiter and as dense as cotton candy.

A private rocket mission aims to boost NASA’s Swift telescope before its orbit decays, extending its hunt for gamma-ray bursts.

Viking 1 kicked off the search for Martian life 50 years ago. Now NASA’s shifting priorities are putting the quest in limbo.