A large round body in space that goes around a star.
Planet
A very hot, very big, and very bright body in space; the sun is a star.
Star
To say something back after someone asks a question.
Answer
To get bigger and taller in size.
Grow
To take something from one place to another.
Carry.
Power; for example, electricity.
Energy
Any kind of ship that travels in space.
Spaceship
A person who studies things by doing tests
Scientist
A business; a group that makes and sells things
Company
To make something.
Build
To think something is true.
Believe
The planet where people live.
Earth
A ship that goes in space.
A rocket
The empty place between planets and stars
Space