Skip to content
Triumph Horizon
Log in
Minerals glossary

Permanently shadowed regions

Also called PSR, PSRs, cold traps, permanently shadowed craters

Polar craters on the Moon that never receive sunlight and stay below ≈110 K, cold enough to trap water ice and other volatiles.

Used in these articles

Related terms

Lunar and space resources

Related coverage

Subscribers read the desk company and technology reports on the names it covers, including new reports before they are published on datadeep.tech.