Nov 9, 2008

How far away is the Moon?

The average distance from the center of the Earth to the center of the Moon is 384,403 km.

To put things in perspective, this great animation from the wikipedia Moon article shows a true scale diagram representing the relative sizes of the two bodies and the time it would take for a beam of light to pass between them - 1.255 seconds.

.. and you thought that Skype was frustrating when there is a communications delay.. imagine talking to a friend on the Moon where the minimum round trip for the information is about 2.5 seconds!

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VAXHeadroom said...

ummm - 1.25secs * 2 = 2.5 seconds, not 1.5!

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