Old 04-2-2004, 07:00 PM   #21
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An Astroid 800 miles away or whatever would be pulled in by earths gravity. Trust me, any astroid that comes that close hits o_O Anything closer than the distance of the moon...is a pretty close call in space terms.

As for the star supernova'ing comment...any star that supernova's isn't going to leave any debris big enough to do anything.
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Old 04-3-2004, 12:17 AM   #22
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Quote:
Originally Posted by Lupin_the_3rd
Quote:
Originally Posted by BluE_MeaniE
Quote:
Originally Posted by That site
Above a height of about 500km is the exosphere, a layer where the atmosphere merges into space.
That's under 800 miles.
Quote:
Originally Posted by If you had read the website, you would have known that they
Although the atmosphere extends to a height of 1000km, it is nevertheless still very important for life on the surface of the Earth. This is because of something known as air pressure, which we will learn more about on the next page.
Then I apologize. I only read the beginning of the site. But okay, then, nevermind.
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Old 04-3-2004, 12:52 AM   #23
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heh, not that it matters anyway. As a matter of fact, i believe that your facts are right...I just did some additional research at other websites. It tends to be around 550km. There is no definite end to the atmosphere, it just kind of thins out.

And Guest is right. Something flying 800miles away from us would definitely be pulled in by our tractor beams(set on full power) and hit us. At the very least, it would cause tidal waves in Japan or something... Not that anyone would care.
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Old 04-3-2004, 01:21 AM   #24
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Ok, Let's say an asteroid of meteoroid is about the size of the earth or bigger. That chunk of rock does not have to hit the earth to do damage. It's gravitational pull and ours would make them to pull on each other, greatly altering the earth's orbit path around the sun (and the free-flying path of the rock), which could send us into the sun, or just make our orbit more eliptical because we are pulled towards or away (depending on which side the rock passes the earth), meaning the earth would get much hotter and much colder, depending on whether the earth is at apogee or parogee to the sun.
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Old 04-3-2004, 03:31 AM   #25
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http://liftoff.msfc.nasa.gov/academy...tmosphere.html

Government/Nasa issued website.
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Old 04-6-2004, 04:36 PM   #26
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the real apocolyse will happen when the Milky Way and Andromeda collide

if we aren't out of the galaxy or extinct by then, we are doomed
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Old 04-7-2004, 10:31 AM   #27
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Well, 50+ astroids have already headed toward Earth, but they have all been stopped by Jupiter. The reason why out of the millions of asteroids in the asteroid belt, none have truly threatened Earth too much is because of the gravitational pull of Jupiter, which basically gets all the comets to crash on it.
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Old 04-7-2004, 11:01 AM   #28
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Eventually everything's survival rate drops to 0. With all those asteroids flying by, eventually one is going to hit. I don't care whether the chances are .0001% that it's going to hit. There's still a chance.
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Old 04-7-2004, 03:33 PM   #29
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just read revelations
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Old 04-7-2004, 10:56 PM   #30
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I'm with RenmazuoGK. Everything dies. Every one of us is going to die. Once we learn to accept that, rather than fear it, we can move on with our lives.
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Old 04-13-2004, 04:38 PM   #31
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I believe I read somewhere that our solar system has twins. But the other sun is a white dawrf, and has an orbit around the sun we see today. And eventually, that sun could come whipping around and bitch slap every planet in it's path.

Yanah God is right too. There will be real havoc if the Milky Way collides with Andromeda. *evil grin*

OR, our sun could drag us into a nearby black hole. BUT WHO KNOWS NOW A DAYS, EH?!
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Old 04-14-2004, 07:02 AM   #32
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I think that we can safely say that nothing huge will hit us in our lifetime, and if a smaller asteroid happens to have an intercept course, it will be small enough for us to knock it far enough away with nukes.
I'm all for hypothetical what if's about the apocalypse, but I think we've got a few issues to work out on earth before we worry about andromida crashing into us...

I'm not sure how off topic this is, but what do you guys think of the tenth planet? The one that is (i think) half the size of pluto and revolves the sun once every thousand years (could be a lot more, i don't remember the details).
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Old 04-14-2004, 07:07 AM   #33
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OMGZ LOOKOUT THE WORLD IS TEH END OMOMGOMG
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Old 04-14-2004, 09:01 AM   #34
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you watch WAY too many movies.
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Old 04-14-2004, 03:55 PM   #35
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Monoc, I'm sure there are hundreds of planets further in our solar system, but they're so far that it's hard to tell if they're part of our solar system or a neighbouring solar system.
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