The Universe Crossword

The 5th planet from the sun
A type of radiation determined by the sun
The force that attracts 2 objects together
The planet that human beings live on
A combination of gas, rock, and dust that orbits the sun
A planet that has rings surrounding it
This object has an orbit, depending on gravity in space. It circles a star.
A hole in space that hasn’t been discovered
A person who is instructed to go into space
A body of rock that floats up in space. This object can cause severe damage if hit earth's surface
An appearance in which stars are pulled by gravity with gas and dust
This word describes the universe seen as a whole
Something that resembles the moon
The 2nd planet from the sun
A path (curved) where planets move around each other
The star in which the earth orbits
An object that goes through phases and gives us night
This object is made of hydrogen and helium, you can see this at night.
The only transportation invented to go to space
An object that has been intentionally put up in space for research