![]() Don’t argue with sound physics or the lord. The elder scientist estimated the age of the planet based upon the rate of cooling from its original molten condition in the early solar system. Lord Kelvin, a preeminent physicist of the late nineteenth century, used sound principles of physics to prove the geologists were exaggerating. How else could the thickness of sedimentary rock and the rise and fall of mountains be accounted for without multiple hundreds of millions of years? This was decades before Charles Darwin “needed” deep time to explain the diversification of life by natural selection. Hundreds of millions of years? Maybe billions. However, geologists were ahead of them on the duration thing by introducing the concept of deep time in the late eighteenth century. ![]() ![]() Twentieth century astrophysicists quantified the expanse and duration of the cosmos. According to Big Bang cosmology, time began at the moment of creation, along with energy, matter and space as constrained by the elegant equation E=mc 2. ![]()
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