The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've ...

JWST data hints that Trappist-1e may have an atmosphere. More transits will test if this world could support liquid water. Recent observations with NASA’s advanced JWST telescope have revealed a ...

Astronomers around the world have confirmed over 6,000 exoplanets, a milestone reached in September 2025. Billions more are waiting to be discovered.

The number of alien planets is monitored by NASA's Exoplanet Science Institute (NExScI), based in Pasadena, California. But ...