Here are some highlights from its journey
From the Popular Science archives.
And that's only the inner asteroid belt.
Experts still aren't sure how the sixth military branch would actually work.
Is there a planet—or even planets—waiting to be discovered out there?
With an icy heart.
You can't see it—but Hubble can.
It's on Google Street View, and it looks incredible.
The spacecraft completely changed our view of Saturn and her moons
A gallery of photos, visualizations, and other pictures of outer space.
A quick primer on Martian law
They're already here
Rise Of The Rocket Girls gives the untold story of the women behind the space race
Go to Western Europe, young companies
Scientists are hot on the trail of our solar system's 9th planet
President Obama signed the Space Act of 2015 over Thanksgiving
One step closer to owning pieces of asteroids?
A controversial bill would give companies the right to own natural resources in space, and it may pass in the Senate by the end of September
Pluto is just the beginning
New Horizons scientist Leslie Young discusses what to expect from the flyby on Tuesday, and the 28-year wait leading up to it
Jupiter's moon is the best candidate for finding extraterrestrial life; here's how we're going to get there