A series of explosions deep inside a nearby galaxy 1 million years ago gave it an unusual shape that scientists say could help explain how our own Milky Way galaxy developed 10 billion years ago. The explosive flare-ups, considered a relatively recent event in astronomical terms, left the galaxy with a spectacular "double bubble" configuration that makes the neighboring M82 galaxy a cosmic spectacle, according to new studies.
In addition, new spectrometric investigations substantiate the theory of "low-velocity" galactic winds moving through M82 at supersonic speed, or several hundred miles per second, affecting the galaxy's form.
