Space is hot because the average kinetic energy of particles is very high. Space feels cold because there are very few particles in a vacuum. It’s like a tiny spark from machinery being very hot individually, but because the spark is so small, it doesn’t do much energy to your body.
Having said that , there is about a thousand watts per square metre of insolation coming in from the Sun on the exterior of the craft, just like there is here on the ground on Earth.
I guess the Apollo designers figured it was easier to insulate and heat the cabin than absorb heat and then try and cool it.
Space is hot because the average kinetic energy of particles is very high. Space feels cold because there are very few particles in a vacuum. It’s like a tiny spark from machinery being very hot individually, but because the spark is so small, it doesn’t do much energy to your body.
Sorry, I think I understand the video but my question was only tangentially related
Having said that , there is about a thousand watts per square metre of insolation coming in from the Sun on the exterior of the craft, just like there is here on the ground on Earth.
I guess the Apollo designers figured it was easier to insulate and heat the cabin than absorb heat and then try and cool it.