Quote:
Originally Posted by KunaiBlood
Think about it, theirs billions upon billions of galaxies in our universe alone, each galaxy holds at least 100billion stars each. And each star can have planets. So the probability of of us being alone in our universe its statistically improbable. Whether they are intelligent lifeforms or simple bacteria we don't truly know.
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And again, you fail to understand just how many variables factor into life being about to survive on this planet.
Let's just take 2.
First of all, any Earth size planet would either be a water world or a desert. In fact, formations of planets with large amounts of water and land is virtually impossible, it should not happen, this is according to scientists, not me.
The gravity of a planet our size would prevent the formation of mountains and continents. In a waterworld, all the land would be eroded in a rather short period of time, but we have tectonic activity which is caused by our very unique moon.
The second thing we can look at is a Jupiter sized planet 5 AU from it's star. If a planet did not have a planet this large then life would NOT exist. Jupiter is responsible for water arriving on Earth (best hypothesis and generally accepted way) and is very likely to have caused the small planet like collided with us to form the moon.
Jupiter is now effectively being our shield from space debris, without we would see 1,000-10,000 times more impacts. We have found 31 "Jupiter like planets" so far. Out of all of those none are anywhere near 5 AU from it's star, it is much closer which completely ruins the habitable zone. "Jupiters" are rare events in the universe and ours is the only one we know of that is "good".
Quote:
Originally Posted by tarozeero
can you please stop making these threads already? NO ONE can say if aliens exist or not because simply, it has not been proven yet.
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We can make educated guesses based on evidence. Plus, a good friendly debate is always fun.