A mini-planet orbiting in the frigid outer reaches of the solar system has a Saturn-like ring of dust and debris that defies the rules of physics, a new study has revealed. Residing in the Kuiper Belt ...

It's been one Neptunian year—or about 165 Earth years—since astronomers first observed the most distant planet from the sun.

The planet will ultimately end up either as a rocky core covered by oceans or as a completely barren naked planetary core. When you purchase through links on our site, we may earn an affiliate ...

Researchers observed exoplanet GJ 1214b's atmosphere by measuring the heat it emits while orbiting its host star. Astronomers directly detected the light emitted by a sub-Neptune exoplanet -- a ...