The reaction force that propels a rocket forward is called
Any object that revolves around another object in space is called a
At the end of a mission, a shuttle can return to Earth and land like a(n)
The creation of the ____________ was important because it is reusable, lands like a normal airplane, and eliminates the need to create a brand new spacecraft each time humans are launched into space.
The space race was the rivalry in the exploration of space between the United States and the Soviet Union.
Gases expelled from the rear of a rocket push the rocket in the _______ direction in relation to the gases.
A satellite is any object that revolves around another object in space.
Speed in a given direction is called
The velocity a rocket must reach to establish an orbit around Earth is called
Who was the first person to walk on the moon?
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