Mystery of Milky Way G-Objects

Mystery of Milky Way G-Objects

June 8, 2026 · 20 min · Season 2 · Episode 16

About this episode

The episode discusses the discovery of G-objects in the Milky Way and their implications for our understanding of stellar life and death near supermassive black holes.

For decades, we thought the center of the Milky Way was a binary world—populated either by robust, bright-blue "S-stars" or by delicate clouds of hydrogen and helium gas. But a discovery by UCLA astronomers has revealed a third, far more mysterious class of inhabitants: the G-objects . These "crimson ghosts" are rewriting our understanding of how stars live and die in the most extreme environment in the galaxy. The center of our galaxy is a "stellar megalopolis" where the density of stars is one billion times higher than in our own solar neighborhood. In this crowded, chaotic space, G-objects may not be flukes, but a common end-product of life in the gravity-well of a supermassive black hole.

Explore listener stats, chart rankings, contacts and more on the Mysteries of the Universe podcast page.