Galactic superwind

[5][6] The resulting effect is a massive gust of rapidly expanding super-heated gases that can span the length of a galaxy.

This accelerated star growth results in more prevalent stellar winds being present in starburst galaxies.

Eventually the gas bubble will expand to encompass other particles of ejected gases, further increasing the force and size of its expansion.

This "snowplow" effect results in a gust of stellar wind and gas that can span the width of a galaxy.

[3] It has been theorized that superwinds can potentially be traveling at a velocity of several thousand kilometers per second by the time they enter the intergalactic medium.

M82 , a starburst galaxy often referred to as the "Cigar Galaxy", is thought to exhibit strong superwinds. [ 1 ]