After decades of searching, astronomers may have finally stumbled upon the first moon known to exist beyond our solar ...

Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Earth’s magnetic bubble, the invisible shield that normally deflects charged particles from the Sun, briefly shrank to a ...

Astronomers found signs that mysterious interstellar object 3I/ATLAS is radiating a "heartbeat" pulse of light that repeats ...

Using the Webb telescope’s powerful Near Infrared Imager and Slitless Spectrograph (NIRISS) instrument, the team detected a ...

Searching for exomoons—moons that orbit around another planet—was one of the most exciting capabilities expected of the James ...

What can star variability—changes in a star's brightness over time—teach astronomers about exoplanet habitability? This is ...

Radiation from space that led to more than 6,000 Airbus aircraft needing emergency computer updates could become a growing ...

From more than 2 billion miles away, a spacecraft built to study Jupiter’s icy moon Europa has managed to snap a crisp, ...

Scientists have detected tiny lightning bolts on Mars for the first time — they were found discharging around NASA's ...

Still, science being science, we needed proof—and we got it in 1992, when two astronomers found two planets orbiting a pulsar ...