What is an icy rock that lets off gas and dust, which may form tails when it is flying close to a sun.

What are rocks floating around in space. Some are the size of a pick-up truck. Others are hundreds of miles across.

It’s not a year, or an amount of time at all. It’s the distance light travels in one year. It’s the same as 5,878,499,810,000 miles (or 9,460,538,400,000,000 meters). When things are very far away, it’s easier to talk about their distance i

What is a little chunk of rock in space smaller than a pick up truck. If it were bigger, it would be an asteroid.

What is a set that includes a star and all of the matter that orbits it, including planets, moons, asteroids, comets, and other objects.

What is a burst of energy and particles from the sun. It releases gases, radiation waves, and magnetic storms.

What is a meteoroid that lands on the surface of a planet.

What is a group of stars in the sky. They're often named after an animal, object, or person. The stars form certain patterns based on where you are.

What is the star in the center of our solar system.

What is all of space and time, and everything in it. It’s everything ever!

What is a place in space where matter and light cannot escape if they fall in.

What is the gases held by gravity around Earth and around other planets. It can also be used to talk about gases around stars.