What Makes Space 'Cold?'

The video explains that heat is the speed of atom movement, while temperature is the average kinetic energy of these atoms. In space, a vacuum, temperature cannot be measured directly. When people refer to space as cold, they mean the cosmic microwave background radiation, a remnant of the Big Bang, with a temperature of 2.7 Kelvin. This radiation is evidence of the universe's origins. Although space is inhospitable, modern spacecraft are equipped with temperature control, ensuring astronauts' safety.

What new insight or understanding did you gain from this video?

Evaluate responses using AI:

OFF