What's this?
Uranus
What's this?
Neptune
What's this?
land the spaceship
What's this?
a model of the solar system
What's this?
dry sand
What's this?
gravity
What's this?
astronaut
What's this?
astronaut
What's this?
astronomer
What's this?
alien
What's this?
telescope
What's this?
fifteen kilometers
What's this?
a part of the spacesuit
What's this?
a model of the solar system
What's this?
a model of the solar system
