Gas might keep the dwarf planet's subsurface ocean from freezing.
It could be something even cooler.
And it's going to keep on smashing them.
Meet the moon with 11 mile high cliff
And it could help prove the existence of Planet Nine.
From the Popular Science archives.
You map, IMAP, we all map.
But we won't know until we get there.
Should we go? Can we afford to go? All this, and more.
Heat and drills will help us probe for alien microbes
Scientists aren't just jerking you around—this is about something more than your childhood nostalgia
A look behind the scenes of NASA's advanced solar probe
Emails among scientists suggest it's possible
Our solar system is pretty familiar by now, but even the Moon was shrouded in mystery just 50 years ago
Short answer: It depends who you ask
So. Many. Things.
New Horizons spacecraft reveals the dwarf planet is slightly larger, has polar ice cap, and more
Even though I helped demote it
Witness history in the making
Slow but steady sun-powered spacecraft could transform space travel
Who knows what might be lurking on this weird, tiny space rock
This year's missions to the outer solar system are set to shake up the planetary family tree
The Dawn spacecraft arrives at Ceres this March, and it could be the most surprising space mission in decades