New high-res images from New Horizons reveal a very blobby space rock.
"Seeing color in a nebula from a garden in San Francisco? That's pretty cool."
New Horizons will soon find out what's up with MU69.
This summer, the mission may get funding to travel to a mysterious rock at the edge of the solar system
Raise the e-sail
We're under a time crunch.
A good week for space photography
This year's missions to the outer solar system are set to shake up the planetary family tree
Scientists recreated ice planets' diamond rain.
Rise Of The Rocket Girls gives the untold story of the women behind the space race
Is there a planet—or even planets—waiting to be discovered out there?
It could be the largest moon we've ever seen
New research provides some clues about our solar system's most mysterious planet.
It's surprisingly lacking in heavy elements
From the Popular Science archives.
A 'Forbidden planet' defies odds and thrives under inhospitable conditions.
New Horizons scientist Leslie Young discusses what to expect from the flyby on Tuesday, and the 28-year wait leading up to it
Popular Science goes way back
Scientists are hot on the trail of our solar system's 9th planet
But the cold would kill you before the smell did.
Shower your friends with meteor facts.
Countdown: 45 years left until 'First Contact'
The Triton Hopper can propel itself a half-mile into the air
As you battle the blizzard, just be happy you don't live on Pluto