Scientists directly imaged two embryonic exoplanets 370 light-years away.
New research provides some clues about our solar system's most mysterious planet.
We're under a time crunch.
Countdown: 45 years left until 'First Contact'
From the Popular Science archives.
Shower your friends with meteor facts.
Scientists recreated ice planets' diamond rain.
Your aurora is showing
Rise Of The Rocket Girls gives the untold story of the women behind the space race
This year's missions to the outer solar system are set to shake up the planetary family tree
But the cold would kill you before the smell did.
As you battle the blizzard, just be happy you don't live on Pluto
Popular Science goes way back
Meet the moon with 11 mile high cliff
Even in space, bureaucracy exists.
"Seeing color in a nebula from a garden in San Francisco? That's pretty cool."
Reflections from a prodigious force in space exploration.
New Horizons scientist Leslie Young discusses what to expect from the flyby on Tuesday, and the 28-year wait leading up to it
Short answer: It depends who you ask
Short answer: Because we changed the definition of the word “planet” to better fit its meaning.
It's surprisingly lacking in heavy elements
Pluto is just the beginning
Don't you want to meet them?