@skrishna real question: why is there light? isn’t the backside of the moon dark night?
@rw007 nope!! it doesn't ever face us but that side of the moon is lit by the sun. This was taken at the South Pole-Aitken basin on the moon and I believe the sun started rising there around May 27.
@skrishna ah right of course. dummy me, should read heliocentric by Galileo again (-;