Sky Science Definitions

A group of planets that orbits a star is called:

• A galaxy
• A universe
• A solar system
• A constellation

A large space rock that floats around in space. Can be found in the belt between the terrestrial and gaseous planets.

• A meteorite
• An Asteroid
• A comet
• A satellite

A rotating group of stars and planets, such as the Milky Way, or Andromeda.

• A solar system
• A constellation
• A galaxy
• A universe

A group of stars that form a picture if you really squint at it and use your imagination

• A constellation
• A galaxy
• A universe
• A solar system

A circular path around a planet or a star. 

• Light Year
• Trajectory
• Rotation
• Orbit

The distance light can travel in 365 days. This is a measure of speed, similar to km per hour, but WAY WAY WAY FASTER!

• Warp Drive
• A light year
• A light month
• A space year

The layer of gas and oxygen that surrounds the Earth and is held there by gravity. 

• Orbit
• Satellite
• Atmosphere
• Pollution

An object that orbits a planet. Example. The moon.

• Satellite
• Comet
• Asteroid

A shooting star that enters our atmosphere.

• A comet
• An asteroid
• A meteor
• A meteorite

A giant ball of ice and dust that comes from outer space. It appears to have a tail as it gets closer to the sun.

• A meteorite
• A satellite
• A comet
• An asteroid