This star-forming galaxy is blowing out powerful winds topping 2 million mph
space.com Apr 1, 2026

This star-forming galaxy is blowing out powerful winds topping 2 million mph

AI-summarised brief · reviewed before publication

NASA's XRISM spacecraft has measured winds in galaxy M82, a starburst galaxy 12 million light-years away, traveling at 2 million miles per hour. The winds, driven by intense stellar activity, flow from the galaxy's core, expelling gas and dust up to 40,000 light-years. This discovery confirms the classic model of starburst galaxies, where shock waves from star formation and supernovas heat gas, kick-starting a powerful wind, with implications for understanding galaxy evolution.