Good question. I don’t know the answer but it started to get warmer from the stratosphere at 16km
Comment on If i were a bird, how high could I go?
roomy@lemmy.world 2 months agoWhy does the temperature increase at 40,000m?
gole@lemmy.zip 2 months ago
sem@lemmy.blahaj.zone 2 months ago
Temperature is a measure of the average kinetic energy of particles of a thing. In the vacuum of space, there are very few particles, and they are mostly moving very very fast, which gives them high energy and high temperature.
I forget what happens at 40,000 m that causes the shift from cold atmosphere to “this is space” but that’s how the temperature is increasing – as you climb there are fewer and fewer particles, moving faster and faster.