Gas might keep the dwarf planet's subsurface ocean from freezing.
But we won't know until we get there.
Scientists aren't just jerking you around—this is about something more than your childhood nostalgia
Emails among scientists suggest it's possible
Could icy slush be driving the dwarf planet's geological activity?
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
This year's missions to the outer solar system are set to shake up the planetary family tree
But that's a pretty big 'if'
The first color movies from New Horizons show Pluto and Charon in a weird waltz
Fasten your seatbelts
It has to do with a surprisingly hazy atmosphere.
Cathy Olkin talks about what New Horizons has seen and where it's going next
New Horizons scientist Leslie Young discusses what to expect from the flyby on Tuesday, and the 28-year wait leading up to it
After nine years and three billion miles, here's what we're learning from it all
The revolutionary explorer gets a life extension
In July, New Horizons crosses the next great frontier in our solar system
The little white dot is only going to get bigger
Bubble, bubble, toil and trouble
Stranger worlds to come