# Neutron Stars Born: The 1933 Supernova Discovery That Changed Everything
Published: January 5, 2026
Duration: 1:43
# This is your Astronomy Tonight podcast.
Welcome back, stargazers! Today we're celebrating January 5th, and let me tell you, this date has some absolutely *stellar* history—and I mean that literally!
On January 5th, 1933, one of the most profound discoveries in human history was announced: **the first evidence of a supernova in another galaxy**. Astronomer Fritz Zwicky and his colleague Walter Baade at the Mount Wilson Observatory were observing when they detected an incredibly bright explosion in the galaxy NGC 884. But here's where it gets really exciting: they proposed something revolutionary for the time—that this expl...
Welcome back, stargazers! Today we're celebrating January 5th, and let me tell you, this date has some absolutely *stellar* history—and I mean that literally!
On January 5th, 1933, one of the most profound discoveries in human history was announced: **the first evidence of a supernova in another galaxy**. Astronomer Fritz Zwicky and his colleague Walter Baade at the Mount Wilson Observatory were observing when they detected an incredibly bright explosion in the galaxy NGC 884. But here's where it gets really exciting: they proposed something revolutionary for the time—that this expl...