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The distance between the Moon and the Earth varies from around 356,400 km to 406,700 km at the extreme perigees (closest) and apogees (farthest). On 19 March 2011, it was closer to the Earth while at full phase than it has been since 1993.[93] Reported as a "super moon", this closest point coincides within an hour of a full moon, and it thus appeared 30 percent brighter, and 14 percent larger than when at its greatest distance.[94][95][96]
The speed of light in vacuum, usually denoted by c, is a universal physical constant important in many areas of physics. Its value is 299,792,458 metres per second, a figure that is exact since the length of the metre is defined from this constant and the international standard for time.[1] In imperial units this speed is approximately 186,282 miles per second.
Exact values - Metres per second 299,792,458 Planck units 1
Approximate values - kilometres per second 300,000 kilometres per hour 1,080 million
miles per second 186,000 miles per hour 671 million
astronomical units per day 173
Originally posted by m.red
i was watching the movie apollo 13 when i came upon a couple questions that didnt make sence to me. it involved communications from the astronauts and the space station on earth.
1.how do astronauts communicate with earth?
a. a satellite from earth sends radio signals to the space craft on the moon.
i guess my question is how are we sending information to the moon faster than the speed of light?
Originally posted by m.red
tell me why the first mission to the moon was in comunication with each other faster than the speed of light.
Originally posted by m.red
i think that because they are sending and recieving messages faster than we can really send them.
Originally posted by m.red
but here is your satellite for apollo 11.
the first (commercial) communications satellite to be placed in geosynchronous orbit,
go do some research.
although it was briefly activated in June of that year to serve the Apollo 11 flight when the Atlantic Intelsat satellite failed.
Originally posted by m.red
wow buddy. i suggest you read the full thing.
NASA had to resort to using undersea cable telephone circuits to bring Apollo's communications to NASA during the mission