Kuiper Belt Object
There Might Be an Entire Orbit, Filled with Asteroids that Came from Outside the Solar System
Some asteroids orbit the Sun in highly inclined orbits, and they might be aliens to our solar system.
NASA Thinks it’s Time to Return to Neptune With its Trident Mission
Is it time to head back to Neptune and its moon Triton? It might be. After all, we have some…
New Horizons is so Far From Earth That the Positions of the Stars Look a Little Different From its Perspective
From its current position in the Kuiper Belt, the New Horizons spacecraft recently conducted a parallax experiment that is not…
Maybe the Elusive Planet 9 Doesn’t Exist After All
Oh Planet Nine, when will you stop toying with us? Whether you call it Planet Nine, Planet X, the Perturber,…
New Horizon’s Flyby Target 2014 MU69 Gets its Official Name: Arrokoth
The KBO formerly known as Ultima Thule (2014 MU69) has officially been named "Arrokoth", the traditional Powhatan-Algonquin language.
Now You Can See MU69 in Thrilling 3D
The New Horizons team has released new images that take advantage of the "binocular effect" to create 3D impressions of…
Pluto and Charon Don’t Have Enough Small Craters
The New Horizons team just shared new findings about the lack of small craters on Pluto and Charon's surface, which…
More Evidence that Planet 9 is Really Out There
What's going on in the distant reaches of our Solar System? Is there a Planet 9 out there? Out in…
The Latest Images of Ultima Thule are in, and they are the Sharpest Yet!
The latest images taken by New Horizons of Ultima Thule are the most detailed to date, and are providing new…
Say Hello to Hippocamp! The New Moon Discovered at Neptune, Which Could Have Broken off from the Larger Moon Proteus
Moons have the coolest names, don't they? Proteus, Titan, and Callisto. Phobos, Deimos, and Encephalitis. But not Io. That's a…