Shadow Games: Exposing a Hidden World on the Moon
Imagine a world where the Sun never passes overhead and, instead, forever moves in a circle along the horizon, casting long shadows that rotate across the landscape.
- Imagine a world where the Sun never passes overhead and, instead, forever moves in a circle along the horizon, casting long shadows that rotate across the landscape.
- That world is the lunar south polar region, soon to be explored by Artemis astronauts.
- Because the Sun hovers near the horizon, the sunken floors of impact craters in the region never see sunlight and lie in perpetual shadow.
- Those permanently shadowed regions are incredibly cold, less than 100K (or less than -280F), and approaching absolute zero.