Dive into the frozen mysteries of Pluto! From its unexpected landscapes to the quest for a subsurface ocean, explore the dwarf planet's secrets and why it's more intriguing than ever!

They estimate Pluto's ocean is, at most, about 8% denser than seawater on Earth, or roughly the same as Utah's Great Salt Lake. If you could somehow get to Pluto's ocean, you could effortlessly float.

The heat might be coming from a hidden ocean or radioactive elements beneath Pluto's surface. This would be a real turn-up for the books as, until now, astronomers thought Pluto was too old to ...