I was wondering if a shockwave from a supernova is finite or reacts as energy and dissipates over distance. The reason I'm asking is because i'm wondering if a supernova could give solarsystems, planets and basically anything with matter a nudge. Then could the objects in space act like a ion drive. Where over millions of years all the supernova's would increase the expanding speed of the original big bang. ps with Ion drive I mean travelling through space with an Ion drive shooting small burst of energy. Since motion is endless in space all these tiny burst end up and in time you would be moving incredibely fast. Why would this not apply to any object and explosion in space? Even if the effect would be unmeasureably small over biljon of years that could add up?