When a space mission is over, the astronauts come back in space shuttles. The shuttles can be used again but rockets can be used only once . Investigate and find out the reason
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Soon astronauts will once again blast off on rockets untested with human passengers. ... safeguards fail—an abort system that in an emergency will get the crew out. ... The space shuttle generally relied on the orbiter's ability to glide back to ... Pusher systems can be used today only because of the immense ...
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