[3][4] In 1947, Martin Schwarzschild joined his lifelong friend, Lyman Spitzer at Princeton University.
With Fred Hoyle, he computed some of the first stellar models to correctly ascend the red-giant branch by steadily burning hydrogen in a shell around the core.
The first Stratoscope produced high resolution images of solar granules and sunspots, confirming the existence of convection in the solar atmosphere, and the second obtained infrared spectra of planets, red giant stars, and the nuclei of galaxies.
Schwarzschild was renowned as a teacher and held major leadership positions in several scientific societies.
[9] Schwarzschild was the Eugene Higgins Professor Emeritus of Astronomy at Princeton University, where he spent most of his professional life.