How big is Ceres?

Dysnomia is Eris's only moon and was discovered on September 10, 2005, which was a Saturday. Also, did you know that "Dysnomia" also refers to a law conflict?

The Grand Canyon is one of the largest canyons on Earth. It was carved by the Colorado River. All that carving took around 17 million years! The layers of rock exposed were even older, some as old as 1.8 billion years old!

West Virginia used to be part of Virginia. They split in 1863 because of the Civil War. Now, West Virginia is still a state! A lot of glass marbles are made in West Virginia.

Sedna has a very elliptical orbit. It is so far away it takes 10,000 Earth years to complete one orbit. You probably realized that "Sedna" backwards is "Andes”, the world's longest mountain range (It's in South America). Both may seem other-worldly!

California is nicknamed "The Golden State". That's why it's colored golden. California is home to 37 million people, which is less than one percent of the world's population.

Some scientists used to think Quaoar had a dense core because a pluto-sized object hit it and stripped away its outer layers, but now we know Quaoar is much lighter than we originally assumed. Even so, it's almost as heavy and big as Pluto's moon Charon,