Featured in Kuiper Belt
Neptune’s bumpy childhood could reveal our solar system’s missing planets
The peace of the modern solar system hides a violent youth.
MU69, previously presumed a space snowman, is instead a pair of cosmic pancakes
Earth isn't flat, but this strange world might be.
MU69 is the most distant object we’ve ever visited—and it looks like a space snowman
New high-res images from New Horizons reveal a very blobby space rock.
It’s official: NASA’s New Horizons spacecraft has made history
Visiting the most distant object ever.
Watch live as NASA spends New Year’s Eve exploring the mysterious outer regions of our solar system
It's time to meet 2014 MU69.
NASA’s New Horizons will spend New Year’s Eve staring at a very mysterious space ball
MU69 is far from your run-of-the-mill solar system object.
The outer solar system awaits—but getting there may not be as easy as we’d like
We're under a time crunch.
What’s hiding in the outer solar system?
Is there a planet—or even planets—waiting to be discovered out there?
The mysterious object NASA is visiting in 2019 might have its very own moon
New Horizons will soon find out what's up with MU69.
NASA just caught a glimpse of the mysterious object New Horizons will reach in 2019
There’s still more to explore after Pluto.