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Hard Rockets And Space Travel

Which spacecraft carried the first person to perform a spacewalk?

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Intermediate Rockets And Space Travel

Which spacecraft first returned close-up images of Mars?

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Intermediate Rockets And Space Travel

What was the first successful interplanetary mission?

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Hard Rockets And Space Travel

Which spacecraft became the first privately developed crewed spacecraft to reach orbit?

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Intermediate Rockets And Space Travel

What is the name of the equation that relates rocket velocity to changing mass?

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