Large groups of stars and planets
Galaxies
Very, very old
Ancient
the force that pulls things toward the ground
gravity
To change something so much that it is completely different
Revolutionize
A power you can’t see but can feel
Invisible force
A small rock that floats in space
Asteroid
Important tasks or trips
Missions
the study of numbers and how to solve problems with them
Mathematics
Small planets that are too small to be called regular planets
Dwarf planets
The area outside earth, where the stars and planets are
Space
to go to new places and learn about them
explore
the area where people live
neighborhood
a strong person or thing that has a lot of energy or power
powerhouse
tools used to see faraway objects, like stars and planets
Telescopes