If you’re in sunlight, you cook. If you’re in shadow, you freeze.
The International Space Station has a nasty daily cycle. One side faces the Sun at 250°F. The shady side hits -250°F.
That’s a 500-degree swing. Talk about a mood.
Astronauts don’t just wear spacesuits. They wear radiators.
A spacesuit has tubes of water to keep you at 70°F. If you step into a sunbeam, you bake. If you step away, you shiver.
Fun Fact: The Mars Rover’s Nuclear Blanket
Is Space Really Cold : ESA – STHM
NASA’s Perseverance rover uses a plutonium heater. It’s literally a tiny nuclear reactor to stay warm.
Mars gets cold—like -200°F at night. Without that heater, the rover’s electronics would shatter.
Also, the Moon is a harsh mistress. It has no atmosphere, so temperatures swing from 260°F in the sun to -280°F in shadow.
