"If trying to explain how three super puffs formed in one system wasn’t challenging enough, now we have to explain a fourth ...

Astronomers discover a fourth planet in Kepler-51, challenging planetary formation theories with new questions.

The Kepler spacecraft is in the final moments of its life. NASA isn’t quite sure when they’ll say their last goodbye to the space telescope which has confirmed the existence of thousands of ...

An unusual planetary system with three known ultra-low density "super-puff" planets has at least one more planet, according ...

This image from NASA's Kepler spacecraft shows members of the Pleiades star cluster taken during Campaign 4 of the K2 Mission. The cluster stretches across two of the 42 charge-coupled devices ...

How many exoplanets are in the cosmos and what can they tell us about planetary formation and evolution? This is what a ...