From new exoplanetary neighbors and a weakening dark energy to the best evidence for life on Mars and an interstellar comet ...

A Carnegie-led team of astronomers detected the strongest evidence yet of an atmosphere around a rocky planet beyond our ...

We are now beginning to better understand exoplanets as against merely discovering them. These are the exotic worlds that ...

Mercury has long baffled astronomers because it defies much of what we know about planet formation. A new space mission ...

Surprised astronomers just discovered a world that blurs the line between planet and stellar remnant, hiding in a system ...

The University of Arizona's OSIRIS-APEX spacecraft only made it home once in 2025, but at least it got some nice snapshots ...