The Kuiper Belt lies billions of kilometres beyond Neptune — a vast, frozen region filled with icy worlds, dwarf planets, and ...

Our solar system now, once again, officially consists of only eight planets. Although largely debunked, speculation continued ...

Modern astronomy is giving us unprecedented views of the asteroids, comets, and other small bodies that litter our cosmic ...

The University of Wyoming Harry C. Vaughan Planetarium will host several live talk programs and the final “Dome After Dark” ...

Makemake, discovered in 2005, orbits the Kuiper Belt nearly 6.8 billion kilometers from the Sun and is one of the brightest objects in the outer Solar System, reflecting more than 70% of the sunlight ...

A newly discovered warp in the outer Solar System may have been created by a small, rocky world, much closer to the Sun than ...

The recent identification and reports of the comet 3I/ATLAS has sparked widespread interest among astronomers, space agencies ...

Astronomers are investigating a potential hidden planet, dubbed Planet Y, far beyond Neptune. Its gravitational pull is suspected to be causing unusua ...

Planet Y is the latest in a series of hypothetical solar system planets that scientists have proposed in recent years, all with slightly different characteristics, but collectively believed to be ...

Interstellar comet 3I/ATLAS on Wednesday reached its closest point to the Sun, a point known as perihelion. Although this ...

The University of Wyoming Harry C. Vaughan Planetarium will host several live talk programs and the final “Dome After Dark” ...

LONDON — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper's authors have ...