Why Is Space Colder Than Antarctica, Even With Billions of Stars?

By Insane Curiosity

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Space is colder than Antarctica, but the real danger in space may not be freezing. It may be overheating. In this video, we explore one of the strangest paradoxes in science: why is space so cold when the Sun and billions of stars are constantly pouring light and energy into the universe? The answer begins with temperature itself. Heat is the motion of particles, but deep space is almost empty. With almost no particles to touch, heat cannot move the way it does on Earth. Conduction and convection nearly disappear, leaving radiation as the only real way for heat to travel through the vacuum. That is why a thermometer in deep space can fall close to absolute zero, while an astronaut in a spacesuit can still overheat. In the vacuum of space, there is no air to carry body heat away, which is why spacesuits are designed not just to protect astronauts from the cold, but to cool them down. This is the science behind why space is colder than Antarctica, why sunlight does not warm the vacuum

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