On this day 20th July 1819 Geologist John Playfair died

Published on 20 July 2023 at 03:31

On this day in 1819 geologist, John Playfair, died. Playfair pioneered the theory that rivers carve out their own valleys. He was a close friend of geologist, James Hutton, and wrote ‘Illustrations of the Huttonion Theory of the Earth’, which amplified and expanded upon Hutton’s revolutionary ideas about how the Earth was formed.
On this day, the first humans Neil Armstrong and Buzz Aldrin land on the moon from Apollo spacecraft 11, and the US Viking 1 lands on Mars at Chryse Planitia ( first Martian landing). Famous birthdays include Alexander the Great, Carlos Santana, and Gregor Mendel. Today is National Moon Day and National Lollipop Day.

« Previous On this day 19th July 1896 A J Cronin was born On this Day 21st july 1796 Robert Burns Died Next »

Add comment

Comments

Paul Anderson

a year ago

I have n't investigated the conspiracy theories, but I do recognise that some folk have strong feelings about these things.