50+ Coldest Temperature In Space Background. The heat that leaves the sun and other stars travels across space as infrared waves of energy called solar radiation. Some parts of space are hot!
Temperature is a measure of the average kinetic energy of a substance, typically expressed in kelvin by astronomers.
But to give some context, you first need to understand heat as scientists do: The coldest recorded temperature in ontario, canada was negative 58.3 degrees celsius or negative 72.9 degrees fahrenheit on january 23 1935. Unlike your house, car, or swimming pool, the vacuum of space has no temperature. The heat that leaves the sun and other stars travels across space as infrared waves of energy called solar radiation.