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Making spacecraft,space shuttle and artificial satellites
They changed the world by being the first reusable spacecraft.
The firing of a spacecraft's engine against the direction of motion to cut the spacecraft's orbital speed. The speed reduction places the spacecraft in a lower orbit. If this lower orbit passes through Earth's atmosphere, the spacecraft reenters.
The process by which a spacecraft is propelled into space.
Unmanned - Space probes are a form of robotic spacecraft.
Making spacecraft,space shuttle and artificial satellites
An object in motion will continue to move at the same speed and in the same direction unless some force acts on it. So there is no need to continuously fire rockets in space. That is only needed if the spacecraft needs to change speed or direction. When spacecraft is on orbit, gravity constantly pulls it toward the object it is orbiting, but it is moving fast enough that, in simple terms, it will constantly miss.
They changed the world by being the first reusable spacecraft.
The firing of a spacecraft's engine against the direction of motion to cut the spacecraft's orbital speed. The speed reduction places the spacecraft in a lower orbit. If this lower orbit passes through Earth's atmosphere, the spacecraft reenters.
a space craft
The law of conservation of momentum comes into play here. I.e A change in the momentum of the space craft ( could be direction or velocity) must cause a equal and opposite momentum change somehow. In space the rocket will carry the mass to push in the opposite direction to the required shift for the momentum change . In most space craft, fuel is burnt and products are allowed to flow backwards pushing the rocket forwards ( or changing direction). It is similar to an inflated balloon being released, the air ir pushed out in one direction and the balloon moves in the other.
The process by which a spacecraft is propelled into space.
If the burning gases go out in one direction, the spacecraft accelerates in the other direction.
how is the space shuttle different form other spacecraft
Unmanned - Space probes are a form of robotic spacecraft.
It is propelled into space by rockets
All U.S. spacecraft since Apollo have provided living space and working space.