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Original Post (Thread Starter)
#934056 02/18/2021 1:33 PM
by Mona - Astronomy
Mona - Astronomy
Our nearest neighbor in space is on show for us most nights – and some days. There are several Google doodles celebrating our relationship with the Moon.

Moon Doodles
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#934061 Feb 18th a 03:05 PM
by Mona - Astronomy
Mona - Astronomy
Yuri Kondratyuk's 115th Birthday

Over 50 years before Neil Armstrong and Buzz Aldrin set foot on the Moon, Ukranian engineer and mathematician Aleksandr Shargei - later to be known as Yuri Kondratyuk - worked out the most efficient way of sending a spacecraft to the Moon and bringing it back again. It wasn't widely known, but NASA aerospace engineer John C. Houbolt knew it and against some virulent opposition, persuaded NASA. It's known as the LOR (lunar orbit rendezvous), or "Kondratyuk's route".
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