This is a much debated topic within the scientist world. I will not claim to be a scientist or and expert. However using common sense you can pretty much solve this puzzle. First look at our star, SOL is in it's dying phases, and in the age of stars is almost dead. However to our lifetimes it still has millions of years to go. As a star dies it's heat output and radiation output changes, causing the "Sweet Spot" in orbit which within sits Earth to change location. At one time it was Venus, now it is earth. Though we will not see the change in our lifetimes sooner or later earth will no longer be habital in human terms. However you also mention the greenhouse effect. Think of all the life matter on the planet that hold carbon as it's main element. That is EVERYTHING. Being that plants take CO2 to make oxygen, their death, and the death of any other living thing, has the opposite result, releasing carbon into the atmosephere, as well as other gasses, many of which produce a greenhouse effect. These living things will die both to a lack of water as the oceans will evaporate, but also to a complete shift in other climate factors like heat and radiation. So once you remove the "Sweet Spot" life cannot exist on the planet and dies. That releases greenhouse gasses and theoretically would increase the effect of losing the "Sweet Spot" in which we now sit.
2006-07-01 04:23:08
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answer #1
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answered by Anonymous
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That is true, the earth could also end up like Mars. Some scientist believe that orbital location around the sun could make it go either way, it is just taking longer. It is also true that even if our orbit is in the correct position and neither will naturally happen, we are still teetering on a thin line. It seems that humans are just tipping the scale in one direction by adding greenhouse gasses into the atmosphere. One interesting difference between us and Venus, is ice. It is not believed that Venus ever had ice caps. Our oceans circulate around the globe creating a natural "air conditioner" in a way, this process is fueled by the ice caps. The cold water sinks to the ocean floor and heads to the equator while the warm water travels up to the ice caps creating a conveyor belt of water, cooling the temp of the oceans and the land. If global warming gets bad enough, and thus melt a majority of the ice, and making the ocean less salty, this conveyor may stop, and ironically enough, create another ice age. It sounds funny, but it is a fact, but no one knows for sure if our adding to the temp of the planet could throw this natural safe guard off.
2006-07-01 04:06:12
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answer #2
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answered by classicwoodworks2000 2
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To answer such a question, one needs to turn not only to science, but also religion. All the answers are in religion, and science takes alot from religion, but shrugs of religion on basis of 'no proof'.
I don't think Earth will end up like Venus. But Earth will have it's end, infact the entire bubble we call "Universe" will collapse. This does not mean the rest of the "Universe" will collapse, this is beyond my current knowledge,
My answer is mostly of religious believe here.
2006-07-01 11:22:34
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answer #3
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answered by Tazz 1
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I don't think I've ever heard that Venus was once earth like.It's too close to the sun to believe this.I think you mean Mars was once earth-like,since there is evidence of water.As the sun cools,or planetary orbits decay,earth could change.Stephen Hawking says we should devote our efforts toward becoming a star-faring race,and I agree.
2006-07-01 04:04:06
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answer #4
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answered by foxspearman 4
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Yeah probably in a very LONG TIME. Either we will adapt and evolve and become greusome alien-like beings with gills or we all die once the air becomes totally unbreatheable. But there will be survivors in underground shelters. They will blast away from our fallen planet in a spaceship and rebuild a new, better earth on mars.
P.S. I luv your icon! SO cute!! (^_^)
2006-07-01 03:59:45
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answer #5
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answered by songbird 6
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No. Venus is much hotter than Earth mostly because it is much closer to the sun.
2006-07-01 04:32:00
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answer #6
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answered by Engineer 6
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I don't know where you got your information, Venus is not our sister planet, it's our brother in drag, and he's very sensitive about it.
2006-07-01 04:45:35
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answer #7
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answered by Anonymous
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