famousscientists.org

9wZlM TIL Inge Lehmann, who discovered that the centre of the Earth is solid, is also one of the longest lived scientists in history, living to 104 years of age and wrote her last scientific article at 99
N7lEN TIL that the discoverer of radio frequency, Heinrich Hertz, did not think his discovery was practically useful in any application.
4XrgR TIL Danish astronomer Tycho Brahe (famous for his pet moose and metal nose) was kidnapped when he was two years old by his uncle. Despite Tycho's parents knowing about this, and them being nobles of phenomenal influence, they did nothing about this, and let his uncle keep him.