We're under a time crunch.
A tour of places in our solar system where life could persevere
Visiting the most distant object ever.
Figuring out the daily grind
After nine years and three billion miles, here's what we're learning from it all
What will we find when we reach Pluto and Ceres? We don't know, but it's going to be wild.
Pluto is just the beginning
Should we go? Can we afford to go? All this, and more.
The survey also confirmed the existence of two other moons, whose discovery was announced last year
From the Popular Science archives.
What's on the horizon for the New Horizons spacecraft
Suspended animation may help us survive interplanetary travel, but it won't keep us alive for 120 years
An interview with Keri Bean, NASA engineer and R2D2's best friend
This year's missions to the outer solar system are set to shake up the planetary family tree
Even though I helped demote it
New Horizons scientist Leslie Young discusses what to expect from the flyby on Tuesday, and the 28-year wait leading up to it
Witness history in the making
The latest and greatest images from the New Horizons mission
A total eclipse of the heart
Short answer: It depends who you ask
Our solar system is pretty familiar by now, but even the Moon was shrouded in mystery just 50 years ago
It could give us clues to how water got to Earth
But we won't know until we get there.
And he thinks the upcoming flyby will prove it