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Response to kentuck (Original post)

Tue Jan 7, 2014, 01:46 AM

32. Actually, the Earth itself continues to cool, as it has for billions of years.

Surface temperatures are probably rising steadily if slightly due to climate change. But rising temps could actually lead to parts of the planet becoming much cooler than they are now (desalination of the Atlantic heat conveyor due to fresh water ice melt).

As far as gravity, it's my understanding that the earth is actually pulling away from the sun, not being pulled toward it. However, when our sun dies in about 5-billion years, it will expand to a size that will swallow up our little planet, burning it to a crisp.

The Earth was extremely hot billions of years ago, when the surface consisted of molten rock, and it's been much cooler during ice ages. None of that really bothers the planet. It goes on its way. What gets bothered is life on the planet, and in our case, human life. Were we not around waiting to be made extinct, none of it would matter.

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