How big is California?

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,

Italy was the home to Leonardo Da Vinci, who was an inventor, mathematician, engineer, painter, sculptor, scientist, musician, and much more. Many other painters, including Raphael and Michelangelo, were also from Italy.

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!

Pluto is no longer a planet. Why do people feel sympathy for it? It has no feelings. Even if it did, why would it care about what people way over on Earth thought? On another note, Pluto's official name is now "134340 Pluto” because it's a dwarf planet.

Eris is the most massive dwarf planet. Although it's a little bit smaller, it is even heavier than Pluto, which is also a dwarf planet. Eris is also very far from the Sun. Eris has a moon, and that's Dysnomia. Where's Dysnomia? It's directly beneath the period at the end of this last sentence.

The Great Barrier Reef, which is off the northeastern coast of Australia, is the biggest single structure made by living organisms! It is home to several thousand species of coral, mollusks, whales, turtles, dolphins, birds, and much more!