Solar storms, sharp sand, and near-weightlessness are just the tip of the iceberg.
And it could teach us about the early solar system.
It's the farthest object we've ever spotted in our neighborhood.
It follows its predecessor toward where no other (active) spacecraft has gone before.
And it could help prove the existence of Planet Nine.
Here are some highlights from its journey
From the Popular Science archives.
An 'Oumuamua by any other name would still be as fascinating.
You map, IMAP, we all map.
Is there a planet—or even planets—waiting to be discovered out there?
The early solar system was a wild, world-destroying place.
The traveller (maybe from another star) didn't stay long and it's moving away fast
This gas giant has seen it all.
A look behind the scenes of NASA's advanced solar probe
NASA's mission to Jupiter is brought to you by: the Sun, from 500 million miles away
It starts orbiting the deadly planet in July
Northwestern University puts on a Solar System symphony
Before Breakthrough Starshot goes interstellar, let's test the laser sails
How skeptical should we be, and how will we find out if this mystery planet is really out there?
Scientists are hot on the trail of our solar system's 9th planet
Short answer: It depends who you ask
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
The finding is good news for the search for intelligent alien life