Hi guys. I was wondering, what happens to the temperature of a object if it's put into vacuum? Say you have a box of steal (something that transfers thermal energy fast between the inside and outside). Inside the box you have a rock. The rock is held in the center of the box using something that does not transfer any kind of thermal energy. Outside the box there is air with constant temperature. The box itself has the same temperature as the air outside. The rock and the air inside the box also has the same temperature. Now you suck the air out of the box, so the rock is left in vacuum. What will happen to the temperature of the rock?