Narrator: Here on Earth, our atmosphere shields us from 77% of the sun’s radiation. But astronauts in space don’t have that natural shield, making them vulnerable to blistering temperatures, severe sunburn, and even cancer-causing cell damage. So to combat that, they wear white suits that reflect the sun’s harmful radiation. It’s just like how painting a wall white keeps the room cooler than a dark color because lighter paint absorbs 35% less heat.
Cathleen Lewis: It’s the ideal color to keep the astronauts safe. If you’re planning to go out in outer space, that reflective nature is an absolute.
Narrator: But those white EVA suits aren’t the only garment in an astronaut’s closet. When heading into space or coming home, NASA astronauts wear a bright orange suit similar in color to the safety vests Air Force pilots wear, and it’s for similar reasons because that loud orange stands out against the blue ocean and sky and is perfect for attracting attention, so if there’s a malfunction during landing and astronauts have to abandon ship, so to speak, they need to be easy to spot for rescue crews. That’s why orange was the color of choice for missions like Russia’s Vostok program as well as current ISS launch and reentry suits.
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