The rocket need to be very powerful to _____ into space.
launch
An invisible force that pulls objects toward each other.
Gravity
The space station _____ the Earth every 90 minutes.
orbits
A special form of jet-propulsion device.
Rocket
In 1969, astronauts _____ on the moon for the first time.
landed
A regular, repeating path that one object in space takes around another one.
Orbit
The space station launched the _____ at noon.
rocket
A machine that changes energy into mechanical motion.
Engine
The _____ are people who work in a rocket.
Crew
To release.
Launch
To come down.
Land
When there isn't any _____, things don't fall on the ground.
gravity
A material used to produce heat or power by burning.
Fuel
A group of people working together.
Crew
A rocket need millions of litres of _____ to launch into space.
fuel
Vehicles like cars or trains need a _____ to move.
engine