On: The art of high performance computing

[uticus]

Amazing considering how much heat travels from Sun (and punches through atmosphere) to Earth surface. Didn’t realize there was that much of an insulation property.

[pixelpoet → uticus]

Besides the heat insulation, without the vacuum of space we would all be deafened by the sun's roar.

[mr_toad → uticus]

Vacuum is a great insulator, which is why we have vacuum flasks.