Astrophysicist Subrahmanyan Chandrasekhar (1910–95) illuminated stellar evolution.

The Division of the Physical Sciences celebrates UChicago’s 125th anniversary.

From our print archive: In spite of the hours clocked at super-spyglasses, astronomers have yet to spot any little green men on Mars or any other planet. But they have made some pretty convincing observations that life does exist on other planets.