How much of the universe have we seen(using technology or telescopes)? Astronomers have seen 13 billion light years away from earth containing billions upon billions of galaxies. We are in one of the galaxies known as the Milky Way. The Milky Way is approximately 100,000 light years in diameter and 1,000 light years thick. Let me put this in to the metric system. A light year is exactly equal to 10,000,000,000,000 kilometers!! That number right there is 10 trillion kilometers. Now multiply that by 13,000,000,000. Just you basic multiplication.
What is 10,000,000,000,000 x 13,000,000,000 = 130,000,000,000,000,000,000,000 km! I don't even know what
number that it is or how accurate it is. This number is just what we have seen so far! Imagine how much more to the
universe there is. This is why I choose to believe there are other intelligent life forms in the entire universe.
Life forms can only live on planets. Assuming that each galaxy has the same amount of inhabitable planets
as the Milky Way I can make a guess that in each of those billions upon billions of galaxies there are about 54
inhabitable planets. In at least one of those planets there has to be at least one other intelligent life form. Also those
54 inhabitable planets need to have a perfect solar system like ours to live. That cuts the amount of inhabitable
planets to about 36 maybe but still there are billions upon billions of solar systems.
Another reason there could be other intelligent life forms is that every life form need some source of food.
Whether they get it by hunting or they make their own food they need some source of food. This brings me to my next topic, food chains/webs. Food chains/webs just show how each living organism gets its food. If there is one animal on a planet how would it get its food (other than cannibalism)? With every species on a planet there has to be at least 2 other species. One above on the food chain and one below (until the species on the top or bottom can't be eaten/makes its own food). This means that on each of the 36 planet there could be at least 3 new species.
This proves my point that there has to be at least one other intelligent life forms in the universe.
That was a very scientific response Ryan. Good work. The law of averages suggests that there be at least one inhabitable planet in each galaxy. If that were the case, then there wouldn't be just 56, there would be billions of habitable planets.
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