coldest temperature in space
As a matter of fact, there is no place in space which is at -273 deg. C. The coldest it gets is the boomerang nebula at -272 deg. C. Theoretically, it can never become 0 Kelvin anywhere. That is a state of complete static, when no entropy is created, and all particles are at rest and not vibrating. Furthermore, space is not cold at all when talking about it around a star.