S-IVB Rocket Stage
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SPACE EXPLORATION
Rocketry
S-IVB Rocket Stage
The S-IVB stage's dual-engine burns were crucial for Apollo's journey from Earth orbit to the Moon
4 Feb 2026
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Why was the ability to restart the S-IVB engine in space important for Apollo lunar missions?
It enabled the S-IVB to land on the Moon independently.
It allowed the spacecraft to perform translunar injection after achieving Earth orbit.
It was used to return the spacecraft from the Moon to Earth.
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