2 things science and human progress accomplished on this date.
1918
Emmy Noether unveils a deep law of physics
Mathematician Emmy Noether's theorem linking symmetry to the conservation laws of physics was presented at Gottingen. It remains one of the most beautiful and useful ideas in all of science.
NASA launched Syncom 2, the first communications satellite to hold a fixed position relative to the ground. The idea now underpins global television, weather forecasting, and phone links.