Why is there a small lower limit to temperaure (-273.15C) but almost limitless upperbound? (million of degree in a star for example)

Question

Is there even an upper limit to temperature?

In: Physics

Answer 1

The only way to make something colder is to take energy away from it. Once you take away all the energy, you’re at absolute zero. That’s why it’s called absolute zero, because it’s zero amount of energy.

Edit: there IS an upper limit called the Planck Temperature, where you can’t add any more energy… But it’s a VERY high temperature.