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are we alone? [message #288258] Thu, 04 October 2007 11:35 Go to previous message
jnz is currently offline  jnz
Messages: 3396
Registered: July 2006
Location: 30th century
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General (3 Stars)

Alien life.[ 39 votes ]
1. Yes 19 / 49%
2. No 20 / 51%

I was browsing the internet the other day and found a big text on the possibility of life on earth. I can't post the source, since i can't find the link anymore. So lets start.

We are about 2/3 from the center of our galaxy. If we were too close, the gravity from other stars would pull our solar system apart and we would be toast. To far away and the elements we need to survive would not be present, we would be too far away from stars who are making them.

Our galaxy is middle-aged, too young and the elements we need to live would not be present. They would not be made yet. Too old and it would be made of red-giants and they're no good for life.

The earth sits on an orbit that's "just right" for life. This window, would be the width of a piece of paper if the sun was the size of a football.

The earth has a big moon, which holds the earth on a nice tilt. Without the moon, the earth would cool in places to -100 and heat up in places to +200 degrees C.

The earth is spinning at a nice speed too, if it was just an hour longer we would die. If it was an hour shorter, we would also die. This is because places wouldn't receive enough heat from the sun or places would receive too much.

We have Jupiter, without Jupiter, the earth would be obliterated by asteroids and comets.

Our sun is medium sized, if out sun was too big, the earth would have to be too far away to stay in orbit. If it was too small the earth would have to be too close.

The earth was hit by a comet at it's creation which contained the amino acids essential for life.

This is aimed at atheists and not people who believe that "god" put us here. Don't post about religions please.
 
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