A new study by Rice University researchers Sho Shibata and Andre Izidoro presents a compelling new model for the formation of ...

In fact, there's a chance that HD 20794 d may not be a super-Earth as suspected, but instead a what's known as a mini-Neptune, or an icy world similar to the one in our solar system but lesser in ...

In deep space, far beyond our solar system, astronomers have spotted loads of super-Earths, mini-Neptunes, and hot Jupiters. But only once have they found an "ultra-hot Neptune" — a Neptune-size ...