NASA’s New Horizons mission changed our understanding of the outer solar system. After its famous Pluto flyby, it traveled ...

Why is Pluto no longer a planet? Discover the real reason behind Pluto’s reclassification as a dwarf planet and the science that led to this change.

Pluto isn't alone—it's part of the Kuiper Belt with possibly hundreds of other planet-sized objects. Because Pluto hasn't achieved gravitational dominance in its region, the International Astronomical ...

Trans-Neptunian Objects (TNOs) are celestial bodies located in the outer solar system, beyond the orbit of Neptune. This region, known as the Kuiper Belt, is home to a diverse array of icy bodies ...

In addition, the objects in the rings would become smaller and smaller over time due to collisions. In the solar system, the Kuiper Belt is a ring-shaped structure consisting of various large ...

On this date, Jan. 19, 2006, the first probe ever destined to visit Pluto, its moons and other Kuiper belt objects launched from Launch Complex 41 at what is now Cape Canaveral Space Force Station.

"It's a pretty big question since a bunch of other large Kuiper Belt Objects also have large moons, so it seems like this is something that happens in the Kuiper Belt with some frequency ...

Then, a subsequent impact between Charon and a smaller Kuiper Belt object could have produced the debris that formed the system's four small moons: Nix, Styx, Kerberos and Hydra. Learn about the ...

Anomalous orbits of Kuiper Belt objects, studied since 2016 by Caltech’s Michael Brown, point to the gravitational pull of an unseen planetary body. Locating Planet X involves monitoring vast ...

Both Pluto and Charon began as independent objects in the Kuiper Belt, a band of icy objects that surrounds our solar system out beyond the orbit of Neptune. View of the proposed kiss-and-capture ...