Science & Technology

How cold is the universe?Physics behind the temperature of the universe

In science fiction movies, the universe is believed to be incredibly cold, but even below freezing, the universe itself is not necessarily cold. In fact, it doesn’t really have any temperature.

Temperature is a measure of the speed at which a particle moves, and heat is the amount of energy that an object’s particles have. Therefore, in a truly empty space, there are no particles, no radiation, and no temperature.

How cold is the universe?Physics behind the temperature of the universe

https://www.space.com/how-cold-is-space/ How cold is the universe?Physics behind the temperature of the universe

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