1.
Large celestial bodies orbiting a star.
2.
Bright spheres of burning gas in space.
3.
A vast system of stars, dust, and gas.
4.
A ball of ice and dust that orbits the sun.
5.
A small rocky object in space.
6.
A streak of light caused by a falling space rock.
7.
A vehicle designed to travel into space.
8.
The path one object takes around another in space.
9.
A tool used to observe distant objects in space.
10.
A person trained to travel in space.
11.
Earth's natural satellite.
12.
The star at the center of our solar system.
14.
When one celestial body blocks another.
15.
The force that attracts objects toward each other.
16.
An object orbiting a planet or star.
17.
Everything that exists in space and time.
18.
Way: The galaxy that contains our solar system.
