How many degrees Celsius is the temperature of satellites in space?

In order to answer this question, we have to ask, "What do we measure the temperature in space?" So, temperature is a substance-specific feature. If it is to measure the temperature of the space in question, we should talk about which substance in space we will measure. The problem begins right here, it is not possible to talk about “the ambient temperature of space” because there is no substance in space, in other words, because we do not move in a substance that surrounds us like air or water.