Space/Science — HabitableZone

Space/Science

20 full Moons and the libration effect
GB — (archived)

20 full Moons and the libration effect.

In case it fails, here:
http://www.photoastronomique.net/geant/0505-0612.html

Originally from here, of course:
APOD OR
http://antwrp.gsfc.nasa.gov/apod/ap070103.html

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