Neptune is way, way out there, orbiting the Sun some 2.8 billion miles away. That’s likely why a new analysis of some old photos of the ice giant have just revealed something a bit funny: We’ve been ...

Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

Non-mixing layers of water and hydrocarbons thousands of miles deep could explain the icy planets’ strange magnetic fields.

You can get in touch with Jess by emailing j.thomson@newsweek.com. Theorbits of Jupiter, Saturn, Uranus and Neptune may have been altered by the fly-by of an enormous object from deep space ...