A rocky exoplanet 48 light-years from Earth has offered the 'strongest evidence yet' that other planets besides Earth could ...

The object about 72 light-years away from Earth could be the first satellite discovered outside our solar system.

Astronomers discovered a moon-like object orbiting a brown dwarf that's orbiting a star. Say that three times fast.

A distant 'exomoon' the size of Jupiter is changing how we think about the cosmos.

The Nancy Grace Roman Space Telescope will be the first space telescope to use an “active coronagraph” to block out unwanted ...

Scientists are documenting a planetary system in the Milky Way galaxy that is so starkly dissimilar to our own solar system ...

Astronomers are homing in on a distant realm where the lines between star, planet, and moon are blurred. Researchers have ...

Observations made with the European Southern Observatory's Very Large Telescope (ESO's VLT) have revealed evidence for a moon-like object in the CD-35 2722 system. Unlike moons in our solar system, ...

Have astronomers observed the first exomoon, or have they spotted a weird object that could challenge the very concept of planets and moons?

Astronomers have discovered a rare planetary system 71 light-years away, where a Jupiter-sized world orbits a brown dwarf, ...

Such are the strange semantic questions raised by studies of CD-35 2722 B, a brown dwarf with about 30 times the mass of ...