Basic astronomical terms B1

A natural satellite that orbits a planet.

• Moon

• Galaxy

• Meteor

• Comet

An instrument that is used to view distant objects in space.

• Telescope

• Orbit

• Star

• Eclipse

All of space and everything in it.

• Nebula

• Planet

• Universe

• Gravity

A person who is trained to travel in a spacecraft.

The force that attracts a body towards the center of the earth, or towards any other physical body having mass.