10 Insane Planets You Won't Believe Exist

10. The One That's Under Water

Gliese 1214 b is classified as a super-Earth. With a designation like that, you could be forgiven for thinking that it's a carbon copy of Earth, at least in composition. You hear "super-Earth," and you probably think of a planet in a habitable zone, complete with oxygen, water, and possibly organic life. But what does that classification ACTUALLY mean? All it really means is that the planet in question is larger than Earth, but significantly smaller than ice giants like Uranus or Neptune. It has nothing to do with the chemical or elemental composition of a planet.

However, Gliese 1214 b DOES likely have something in common with Earth: oceans. Lots of them. Actually, it's basically one big, giant ocean from pole to pole.

It's assumed that the planet has a solid, rocky core, but that its entire surface is covered in a vast ocean of sorts. Its atmosphere is water-heavy, but given the planet's temperatures and gravity, it's highly unlikely that we'd find liquid water, or even water in a solid or gas form. Instead, scientists believe that this planet is covered in an ocean of plasma water.

Does that make sense? No? Good. Welcome to space. Surf's up.