https://www.vice.com/en_us/article/wxezvm/scientists-found-breathable-oxygen-in-another-galaxy-for-the-first-time

Astronomers have spotted molecular oxygen in a galaxy far far away, marking the first time that this important element has ever been detected outside of the Milky Way.

This momentous “first detection of extragalactic molecular oxygen,” as it is described in a recent study in The Astrophysical Journal, has big implications for understanding the crucial role of oxygen in the evolution of planets, stars, galaxies, and life.