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8h 21min, apr 15, 1970 y - Mailbox

Description:

Houston sends instructions on how to build a "mailbox", a device that is designed to remove carbon dioxide from the air by absorbing it.

Added to timeline:

Apollo 13

25 Nov 2018

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Date:

8h 21min, apr 15, 1970 y

Now

~ 56 years ago

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