These distant worlds are called exoplanets: planets that exist outside our solar system. Most of the exoplanets scientists have discovered so far orbit stars within the Milky Way, but some lie even ...

From the scorching surface of Mercury to the icy edges of Neptune, our planetary neighborhood is full of wonders. The order of the planets isn't just trivia—it tells a story about temperature, ...

Some planets may be soot-rich rather than water-based. Atmosphere studies will be key to understanding their true nature.

Located at a relatively close distance of 41 light years from Earth, the Trappist-1 system has attracted significant ...

Free-floating, planetary-mass objects that are just drifting carefree through the galaxy, untethered and starless, appear to be able to generate their own systems of moons, like a planetary system on ...

That raises the possibility that the TRAPPIST-1e exoplanet could also have liquid water and therefore support life.

One of the boldest dreams in modern astronomy is the search for Earth-like worlds beyond our solar system. These exoplanets ...

Exoplanet TRAPPIST-1 e may contain an atmosphere and liquid water, NASA scientists said. Research into the exoplanet is ...

Uranus's moons — what is unique about each moon and why do they orbit at a tilt?

Fresh off the excitement of the Perseids meteor shower is a chance to see six planets lined up in the sky at once. These events, colloquially known as planet parades, occur occasionally with the most ...

Luke found life on Tatooine to be boring, but he should be glad, because as we have seen, binary stars have the potential to play all kinds of havoc on their orbiting circumbinary planets. A ...