27 posted 2 years ago by throwaway_27_ 2 years ago by throwaway_27_ +44 / -17 660 comments share 660 comments share save hide report block hide replies
Sit on one side of your room and look up at the light in the ceiling
Then move to the opposite side of the room and look up at the same ceiling light
It’s upside down, same as the moon when comparing n and s hemispheres