... CGPS , RAL/U. Calgary Explanation: A huge chimney venting hot clouds of gas out from the plane of our Milky Way Galaxy has recently been imaged in radio waves . The Canadian Galactic Plane Survey team used an array of radio telescopes to survey an ionized gas region known as W4. ... Possible explanations include supernova explosions or strong stellar winds from these stars. ... Publications with keywords: galactic plane - supernova . Publications with words: galactic plane - supernova . ...