The Mars rover will __________ on Mars.
land
The ___________________ is going to space in a rocket.
astronaut
The sun is the center of our __________ ____________.
solar system
One day I am going to be an _______________ .
astronaut
The astronauts enter the rocket before _____________.
takeoff
Many ________________ have been sent to in space.
spacecrafts
The rocket will ___________ on Mars.
land
To go to space, astronauts must _______________ in a rocket.
takeoff
The astronaut is flying to space in a _____________.
rocket
There are millions of solar systems in ____________.
space