I was recently looking at the control panel for the Universe Simulation, and I noticed a switch labeled
Sun - On/Off
I don't really want to turn off the sun without knowing what would happen.
Assuming I turn off the sun, it stops giving off light and heat, but its gravity remains the same - I know, physically impossible, but hypothetically speaking, assuming there was no supernova or other event that made the sun stop shining, it just suddenly was turned off How long could humans survive? I know the earth would get really dark after the ~8 minutes go by and the light that was emitted by the past sun reaches the earth, but how cold would it get?
I know things like growing crops would be quite impossible whit no light, but there is still quite a lot of potential energy stored up on the earth, and surely some humans could stay warm for a little while? What if someone was in a bunker, burred deep underground with thick, insulated walls, had enough compressed oxygen, clean water, plenty of food, and some way to safely expel waste, How long could this human survive? Granted, life in a bunker like this would be boring, but just think of it - you could be the last person alive
Or could you? Is it remotely possible to keep a well insulated room on earth with a heatless sun, remotely close to a normal room temperature?