NASA Start Mission in The Mooon 001

Keeping cool in space is a critical challenge for astronauts and spacecraft systems due to the extreme temperatures and lack of a surrounding atmosphere to conduct heat away. Here's a description of how cooling is achieved in space:

Radiative Cooling: In the vacuum of space, the primary method of cooling is radiative cooling. Objects in space emit thermal radiation, which carries away heat energy. Spacecraft are equipped with specialized radiators that are designed to maximize the emission of heat into space. These radiators often have large, reflective surfaces to minimize the absorption of solar radiation, which can heat up the spacecraft.