Across the galaxy, astronomers now see that planetary systems fall into four broad classes, and our own solar system, part of the rare Ordered group, is only one of them. At the same time, discoveries ...

A new report explains a young star system where low-density planets show how super-Earths and sub-Neptunes begin to form, based on new findings from the V1298 system ...

"We have by and large been ignoring triples in models and simulations — we're just starting to understand how these types of systems evolve." When you purchase through links on our site, we may earn ...