Yes, but taking into account any drive that uses mass you couldn't carry enough to accelerate for very long. There's been a lot of speculation about scooping u

Yes, but taking into account any drive that uses mass you couldn't carry enough to accelerate for very long. There's been a lot of speculation about scooping up hydrogen from the interstellar medium as fuel, but I think it's mainly wishful thinking. https://en.wikipedia.org/wiki/Bussard_ramjet https://en.wikipedia.org/wiki/Bussard_ramjet https://en.wikipedia.org/wiki/Tau_Zero https://en.wikipedia.org/wiki/Tau_Zero