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The descent starts on the far side of the moon, which puts the lunar module about 50,000 feet above the lunar surface at the landing site. After orbiting the moon one more time, the astronauts begin a 7 minute burn down to the surface of the moon itself. From the first firing of their engine to touchdown is apporximately 135 minutes.

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10y ago
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14y ago

Apollo 13 launched on April 11th 1970. The oxygen tank disaster occurred on April 14th. It's closest approach to the moon was on 15th April.

So 4 days, approximately.

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14y ago

A few seconds - radio signals are a form of electromagnetic radiation (light), so they travel at the speed of light.

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12y ago

21 hours 38 minutes 21 second

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14y ago

About 3 days.

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Q: How long where Apollo 11 on the moon?
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