Dolphins sleep with one eye shut and one eye open so when they’re sleeping they can find their way to the surface to take a breath of air.
Baby turtles are called hatchlings.
The Great Pyramids used to be as white as snow because they were encased in a bright limestone that has worn off over the years.
Asteroids are small planets that are very hard to see, even with a giant telescope.
Comets are space rocks made mostly from ice and dust, just like giant dirty snowballs.
