Strange radio waves emerge from the direction of the galactic centre

Invisible Galactic Gale: Superwind From Spectacularly Energetic Supernova Explosions

Hubble detects a dangerous galactic dance

“A fast-moving star is as good as a spaceship,” says astronomer Jonathan Carroll-Nellenback. A new computer simulation shows stellar hitchhiking might be the best way to settle a galaxy. If a civilization reaches the galactic center “it explodes with settlements, [...] at the fastest rate possible.”