Why is space cold?

The space is huge. It has billions of stars. Despite having so many stars, space is so colder. Its temperature is 2.7 kelvin (−270.45 °C or −454.81 °F).

The sun is the center of our solar system. If you want to get a true sense of the sun's temperature, you need to go to a desert like the Sahara or Death Valley. If there is so much temperature in one sun, then why is our space so cold even though there are innumerable stars bigger than the sun!

 Simply put the number of stars in space is small or insignificant compared to the vastness of space. For example, it would be like a ring in a large field. The heat of the stars goes as far as it can go. But then heat despite in vast space.

As we know, we get heat from radiation from the sun. This rule also applies to all stars in space. Heat also comes from other stars in space via radiation. And this radiation is through light. The lights of these stars can only reach a certain place in space. Then there is only absolute zero and then no more light.

Moreover, Earth can retain its heat with the help of its atmosphere, but there is no such thing in space. This is also one of the causes of space cold.

So our space is so cold!!

Research: Mahtab Uddin

Translation: Mohammad Sadman Islam

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