Question

Could you please tell me the range of time scale. Is it 10^-22 to 10¹³ (or) 10^-22 to 10¹⁸ ?

Answer 1

10-22to 1018 I think the Geologic Time Scale gives us a perspective we couldn’t have if we only considered the world in the scale of Human History. Paleontologists are still debating the length of time the human species has lived on Earth, but it may be something like one million years. And a human lifetime averages 7o years or so. But the geologic records tells us that Earth is about 4.6billionyears old. It coalesced out of planetesimals (asteroids), it gained a moon, its interior differentiated and developed distinct layers and a core, and started generating a magnetic field and global plate tectonics, it developed oceans and an atmosphere, and incubated life. We can look at evidence in the rocks and see Deep Time. That’s a mind-blowing concept, and having your mind blown by science is a good thing. It helps you see beyond your own limitations and think outside the box.