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ninja
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Why do many claim the universe as a cold place? If it is the natural phenomena then how does formation of stars take place?
ninja said:what apart from black holes could obstruct the light traveling through space.
The universe is considered as cold because the average temperature of space is only about 2.7 Kelvin, or -270.45 degrees Celsius. This is due to the expansion of the universe, which causes the temperature to decrease over time.
Earth's average temperature is significantly higher than the average temperature of the universe. The average temperature on Earth is around 15 degrees Celsius, while the universe's average temperature is close to absolute zero, making it much colder.
The universe is cold due to the leftover radiation from the Big Bang, known as the cosmic microwave background (CMB). As the universe expands, this radiation is stretched out and becomes cooler over time.
While the average temperature of the universe is very cold, there are still areas within the universe that are much hotter, such as stars and galaxies. However, these hot areas make up a small fraction of the overall universe.
It is believed that the universe will continue to expand and cool down over time, eventually reaching a state of maximum entropy where the temperature will be equal everywhere. This is known as the "heat death" of the universe, where all energy is evenly distributed and no work can be done.