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What do you know today, that you did not yesterday?

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swittle Mar 2021 10:29am, 9 Mar 2021 73,605 posts	Quote Pin swittle [I trust the governor of the Bank of England is up to speed ]
GregP Mar 2021 10:29am, 9 Mar 2021 125,683 posts	Quote Pin GregP [I sometimes wonder whether I'd get cleverer by osmosis if I spent more time with Cerra rather than just a couple of hours every December when there isn't a pandemic in the month]
ChrisHB Mar 2021 11:17am, 9 Mar 2021 20,709 posts	Quote Pin ChrisHB Why isn't a stone I find in my garden 4.5 triillion years old, I often wonder. That is something I might know later today but do not know now. Quite a lot of the earth must be as old as the solar system.
rf_fozzy Mar 2021 11:31am, 9 Mar 2021 13,559 posts	Quote Pin rf_fozzy Given the age of the universe is about 13.7 billion years old, I'd be worried if you had rocks in your garden that were 4.5 trillion years old. Unless that is the final conclusive proof of the nonexistance of God? (see:Babel Fish).
rf_fozzy Mar 2021 11:31am, 9 Mar 2021 13,560 posts	Quote Pin rf_fozzy (I think you meant 4.5 billion years for the age of the solar system, Chris )
57.5 Degrees of Pain Mar 2021 12:53pm, 9 Mar 2021 6,770 posts	Quote Pin 57.5 Degrees of Pain Most of the stuff around has been reformatted a few times since the earth's formation. Unless you go somewhere like Australia that's doesn't change much.
GlennR Mar 2021 1:25pm, 9 Mar 2021 56,178 posts	Quote Pin GlennR [Someone please correct me if I'm talking bollocks, but I think that give or take a bit of nuclear fusion or fission on earth, or the possibility of a meteorite having landed in Chris's garden, the atoms in his rock will be as old as when the earth first formed. Many things might have happened to the molecules of course. All matter in the universe which is not hydrogen has been created as a result of fusion occurring in stars.]
rf_fozzy Mar 2021 1:29pm, 9 Mar 2021 13,565 posts	Quote Pin rf_fozzy "All matter in the universe which is not hydrogen has been created as a result of fusion occurring in stars" Only up to iron. Beyond that they come from Supernovae.
ChrisHB Mar 2021 1:30pm, 9 Mar 2021 20,710 posts	Quote Pin ChrisHB yes, I misremembered between one page and the next although I went back to check.
Cerrertonia Mar 2021 1:45pm, 9 Mar 2021 13,808 posts	Quote Pin Cerrertonia The oldest known earth rock was found on the moon, and was brought back by Apollo 14 astronauts collecting moon rock samples.