From NobelPrize https://twitter.com/NobelPrize on Twitter: Today we remember nuclear physicist Hans Bethe, who was born on this day in 1906. In 1938, Hans Bethe proved that fusion produces the enormous energy emitted by stars. He proposed two different processes, both of which result in hydrogen nuclei fusing with helium nuclei. https://twitter.com/NobelPrize/status/1146001576018006017/photo/1 https://chirp.cooleysekula.net/attachment/58954