Using NASA's planet-hunting spacecraft TESS (Transiting Exoplanet Survey Satellite), astronomers have discovered three ...

Scientists found two Earth-sized planets and a third candidate orbiting a nearby double star system, TOI-2267.

NASA’s Transiting Exoplanet Survey Satellite (TESS) has been used to discover Earth-size planet TOI 700 e. It is "orbiting ...

The Habitable Worlds Observatory (HWO) is slated to be the next Great Observatory for the world. Its main focus has been ...

A distant gas giant the size of 10 Jupiters is now the first planet outside Earth's solar system to be mapped in three ...

White dwarf stars, like this one shown shrouded by a planetary nebula, are much smaller than stars like our Sun. NASA/R. Ciardullo (PSU)/H. Bond (STScI) The Sun will someday die. This will happen when ...

THAT’s NO MOON - Earth doesn’t just have one moon; sometimes, it has a companion satellite or “mini-moon.” Discovered on ...

No, NASA didn’t confirm a second moon, but scientists did discover something else that’s been traveling with Earth for ...

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.