Olbers\u2019 Solution<\/h3>\n\n\n\n
Olbers tried to come up with a solution to his own paradox without changing the existing static, infinite model of the universe. He proposed the concept of interstellar absorption \u2013 a hypothesis that space is not transparent, and that cosmic dust absorbs and blocks out the light coming from the more distant stars. It would explain why only a few stars were seen, but it had an issue. The dust would eventually heat up due to all the light energy it absorbs, and end up re-radiating the light, thus bringing us back to square one \u2013 the sky should<\/em> be as bright at night as it is during the day. It wasn\u2019t until the early 1900s that another astronomer came up with a new solution for why the night sky was black instead of white.<\/p>\n\n\n\n In the 1920s, American astronomer Edwin Hubble<\/a> discovered that the universe is not static at all, but constantly expanding, with galaxies constantly moving rapidly outwards in all directions. This led to the Big Bang Theory, the most prevalent theory about the origin of the universe. The theory states that the universe was once a single point in time and space, when for no discernible reason, about 13.8 billion years ago, it expanded suddenly and rapidly. This theory solves Olbers\u2019 paradox through two explanations resulting from the Big Bang Theory:<\/p>\n\n\n\n According to the widely accepted Big Bang Theory, the universe has a finite age. In fact, it is around 13.8 billion years old. Also, since the speed of light is finite, we see the stars as they were when the light was emitted; so we would, for instance, see a star that is 3000 light years<\/a> away, as it was 3000 years ago. <\/p>\n\n\n\n The finite age of the universe, combined with the finite speed of light means that the light from the more distant stars has not reached us yet, because the stars are not old enough (for example, a star that is 13.9 billion light years away is not old enough for the light to have reached us). However, this theory has one gap. Until a few hundred thousand years after the Big Bang, the universe was hot and dense like the core of a star. After that, when light first escaped into space, it lit up the entire universe, making every direction as bright as a star. This light is known as cosmic background radiation, and theoretically, we should be able to see it, and the sky shouldn\u2019t be dark. To better understand this, there’s another explanation to complete the solution to Olbers’ paradox.<\/p>\n\n\n\nBig Bang Theory
<\/h3>\n\n\n\n![\"\"](\"https:\/\/i1.wp.com\/www.yaabot.com\/wp-content\/uploads\/2020\/04\/yaabot_big_bang.jpg?fit=1024%2C553&ssl=1\")
<\/figure>\n\n\n\nFinite Age of the Universe<\/strong><\/h3>\n\n\n\n
2. Expansion of the Universe<\/strong><\/h3>\n\n\n\n
![\"\"](\"https:\/\/yaabot.com\/wp-content\/uploads\/2020\/04\/yaabot_the-electromagnetic-spectrum-diagram-vector-1571487.jpg\")
source: vectorstock.com<\/figcaption><\/figure>\n\n\n\n