If you’re talking about the Learjet that crashed (RIP), I think it was cruising around 37-41k feet. I don’t know the scientific reason for why it’s so cold up there.
The ground is opaque and dense so sunlight heats it effectively and it holds onto that heat well. Air is transparent and not very dense so it doesn’t heat well nor does it hold that heat.
Warm places are warm near the ground, but as you gain altitude it becomes cold quickly no matter where you are.
If you’re talking about the Learjet that crashed (RIP), I think it was cruising around 37-41k feet. I don’t know the scientific reason for why it’s so cold up there.
The ground is opaque and dense so sunlight heats it effectively and it holds onto that heat well. Air is transparent and not very dense so it doesn’t heat well nor does it hold that heat.
Warm places are warm near the ground, but as you gain altitude it becomes cold quickly no matter where you are.