Example: Olbers paradox what is?

The Olbers paradox, also known as the infinite sky paradox, is a cosmological paradox that was first formulated by the German astronomer G. W. Olbers in the 19th century. The paradox is this:

If we imagine that the Universe is infinite and evenly filled with stars, then any straight line from an observation point on Earth must intersect a star on its way. Therefore, at any point in the sky, the observer should see a bright star. If so, then the night sky should be completely bright and leave no room for darkness.

However, in reality, the night sky is not bright. This is due to several factors, including:

1. Redshift: Due to the expansion of the universe, light from distant stars is shifted towards the red end of the spectrum, making them less visible to the human eye.

2. Absorption: Interstellar dust and gas can absorb and scatter light, reducing its brightness on its way to the observer.

3. Limitation of the Universe: The Universe has a limited age, so the light from the most distant stars has not yet reached us.

Thus, Olbers’ paradox is resolved by taking into account the physical processes and properties of the universe that lead to the fact that the night sky is not infinitely bright.