Retrorockets, space and movement, muse of the day.
Discussion
Was wondering 
On earth 'Every Action has an Equal and Opposite Reaction', so whatever the forces applied are also returned likewise.
In Space i believe is pretty much a vacuum? So how do retrorockets work if their is nothing for the energy released to push on to propel the object away from the retrorockets forces.
Often in films you see a Spaceman who gets pushed off his craft and floats forevermore unless he fires a jet in the opposite direction but again without anything in a vacuum to push off i don't get it.
I know I'm wrong but whats happens to make this correct?
On earth 'Every Action has an Equal and Opposite Reaction', so whatever the forces applied are also returned likewise.
In Space i believe is pretty much a vacuum? So how do retrorockets work if their is nothing for the energy released to push on to propel the object away from the retrorockets forces.
Often in films you see a Spaceman who gets pushed off his craft and floats forevermore unless he fires a jet in the opposite direction but again without anything in a vacuum to push off i don't get it.
I know I'm wrong but whats happens to make this correct?
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