4 ms·Why did they raise the orbit above the Earth so many times instead of just burning for the moon all at once?by Figs 7y agoWhy did they raise the orbit above the Earth so many times instead of just burning for the moon all at once?delfinom 7y agoThrusters not strong enough to move the orbit in one go, they wait for it to along around to thrust again.mhh__ 7y agoPresumably exploiting the Oberth effect as it goes round https://en.wikipedia.org/wiki/Oberth_effect https://en.wikipedia.org/wiki/Oberth_effect