Things fall to the ground on Earth because of this
gravity
What is it?
The Earth
Who is this?
An astronaut
You do this to shut a door with a key
lock
What is it?
The Mars
This is a special clothing to wear in space
The spacesuit
What is it?
The moon
What is it?
Space station
This means to move slowly on water, in the air or in space
Float (v)
What is it?
Jupiter
