Given that the universe is 93,000,000,000 light years, and each light year is equal to 9,461,000,000,000 kms, we've got a lot of space to begin with. In that space, there exist billions of galaxies, each with billions of stars having trillions of planets.
Also, the universe started out somewhere around 14,000,000,000 years ago, so we've got a lot of time, too. However, I think, considering our universe's chaotic past, a major chunk of time was not a good time for life to evolve.
Also, the universe started out somewhere around 14,000,000,000 years ago, so we've got a lot of time, too. However, I think, considering our universe's chaotic past, a major chunk of time was not a good time for life to evolve.
So, any life-form in the universe must have begun roughly 4,000,000,000-6,000,000,000 years ago as Earth is considered to be among the oldest habitable planets.
Just pondering over these numbers will convince you that life exists elsewhere. And that's a good enough assumption. Or is it?
For more information, click here. Or watch an amazing video by Kurzgesagt on YouTube by clicking here.
I do not claim to be an expert on the subject matter, therefore, any errors that you notice should be brought to my attention via comments. Thank you!
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