[Sundancefisher]

Originally Posted by silverdoctor

Half life of atoms is a constant - Uranium-238 has a half life of some 4.5 billion years. Oldest rocks found on earth are some 3.5 billion years old. How is it known that the earth formed some 4.6 billions of years ago? Not by rocks on earth - but by meteorites that fall to earth. The oldest rock known is in the asteroid belt between Jupiter and Mars.

How does geology know that a meteor hit the Yucatan Peninsula some 65 million years ago? By the dirt layer it left and elements contained within that layer. Created a layer all around the earth. How do they know dinosaurs weren't killed off by said meteor? Because no dino fossils were found in said layer.

The most accurate clock on earth is actually atomic - uses cesium atoms which has a very specific frequency and half life. If science didn't know these atoms, we would never keep time, GPS wouldn't work.

Science is wonderful, embrace it.


And folks, relax, no sense in fighting everything. Have a conversation - not a war.

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