Originally posted by whodeyNah, the end of the earth is less puzzling then the end of the universe.
Perhaps the question should be when will the end of earth be? Scientists say that the sun is expanding and will someday engulf the earth completly before it collapses on iteself and dies.
Besides, all life on earth(not life itself) is set to die within the next billion years because of the sun's expansion. The reason being, eventually the sun will be able to heat the earth up enough to give us a runaway greenhouse effect, and we will eventually end up like venus is now, with extreme surface temperatures, no water(it will all be in the air), and a slow rotation(will be caused by the moon, not the sun).
Of course, add humans in the mix, and global warming, and it is probable that we don't have anywhere near 1 billion years left.
The earth itself won't be engulfed until the sun goes into its red giant phase. When that happens, they are not sure if the sun will engulf us or not. Some people think that the earth's rotation will be pushed out as the sun expands. I am pretty sure that is not likely, since we don't rotate around the sun, we rotate around the solar systems center of gravity. Its also possible that while the sun burns off its hydrogen, its gravitational pull on earth could get weaker and earths orbit could expand because of it(less mass, less gravity).
Originally posted by FurorThe universe will never end. God created the universe...Heaven will be eternal.....
Just wondering how everyone thinks the percieveable universe will end.
I personally think that the universe will continue to expand, and the temperature of the universe will eventually cool down to a point just a little above absolute zero.
Originally posted by FurorThis wouldn't destroy the universe, right? It would just kill all life on Earth...which technically doesn't count.
Just wondering how everyone thinks the percieveable universe will end.
I personally think that the universe will continue to expand, and the temperature of the universe will eventually cool down to a point just a little above absolute zero.
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Originally posted by Furor"I am pretty sure that is not likely, since we don't rotate around the sun, we rotate around the solar systems center of gravity."
Nah, the end of the earth is less puzzling then the end of the universe.
Besides, all life on earth(not life itself) is set to die within the next billion years because of the sun's expansion. The reason being, eventually the sun will be able to heat the earth up enough to give us a runaway greenhouse effect, and we will eventually end up like venus is now arth could get weaker and earths orbit could expand because of it(less mass, less gravity).
We do rotate around the Sun, which may so happen to be the center of the solar system.
Originally posted by UmbrageOfSnowSounds like he saw a show on the Discovery Channel about this one time, and now he thinks he has the ability to lecture!
How exactly is this possible. The sun doesn't really burn hydrogen, it creates He-4 from it. And either way, the mass of the sun does not change as hydrogen is used. If the mass does not change, how can its gravitational pull on Earth weaken?
Originally posted by cmsMasterIf you are talking about me, I'll have you know that while physics is not my specialty, I have read all of Hawking's popularized science books, along with several other books, taken quite a few physics classes, and taken a course specifically in Big Bang theory.
Sounds like he saw a show on the Discovery Channel about this one time, and now he thinks he has the ability to lecture!
Originally posted by UmbrageOfSnowWeeeeeeeeeeeeeell actually......
How exactly is this possible. The sun doesn't really burn hydrogen, it creates He-4 from it. And either way, the mass of the sun does not change as hydrogen is used. If the mass does not change, how can its gravitational pull on Earth weaken?
Mass is being turned into energy, which is why we get heat.....
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Originally posted by scottishinnzTrue, I apologize for being a mild idiot. For some reason I was thinking that was insignificant.
Weeeeeeeeeeeeeell actually......
Mass is being turned into energy, which is why we get heat.....
Edit: I actually just looked up the masses of the energy lost, and only 0.7% of the mass of the hydrogens is lost in the conversion to helium. So it isn't too big a number.