Eris is the most massive and second-largest known dwarf planet in the Solar System. It was discovered in January 2005 by a Palomar Observatory–based team led by Mike Brown . Haumea is an oval-shaped ...

This resource package is suitable for educators, students, and anyone interested in learning more about dwarf planets! Learn more about Pluto and other dwarf planets, which are defined as objects that ...

The Solar System doesn't get much colder than the Kuiper Belt. Out past the orbit of Pluto, far from the warmth of the Sun, drifts a vast expanse of icy rocks and dwarf planets thought too cold to ...

The timeline of discovery of Solar System planets and their natural ... In the following tables, planetary satellites are indicated in bold type (e.g. Moon) while planets and dwarf planets, which ...

In 1995, a parallel race was on in astronomy — one to find the first planet beyond our own solar system, and the other to find the first brown dwarf, a class of object too heavy to be a planet ...

Our solar system is a vast celestial neighborhood centered around the Sun, a medium-sized star. You’ll find eight planets orbiting the Sun, along with numerous dwarf planets, moons, asteroids, and ...

Ever wonder where the edge of our solar ... like the dwarf planet Sedna, discovered in 2003, and those that move almost perpendicular to the planet’s orbits, such as 2008 KV42 and 2011 KT19. “The best ...

The origin of a dwarf planet living in our solar system was a subject of debate for several years among astronomers. They now seem to have settled it. Ceres, a dwarf planet in the asteroid belt ...

First discovered in 1801, Ceres is sometimes referred to as an asteroid because of where it hangs out in the Solar System; but it's big and spherical enough to be classified as a dwarf planet, just ...

Episode 5: Strange Worlds Professor Cox visits an egg-shaped dwarf planet that shouldn’t really exist and a tiny moon that looks like a UFO. "Solar System" features a whole host of scientists ...

Solar System is five episodes. The first episode is called Volcano Worlds. Professor Brian Cox travels to Iceland where he uses the Icelandic geology to explain the volcanic planets of the solar ...