Power requirements

[ffutures]

I think someone told me that (ignoring travel times) it actually takes less energy to travel from Earth to Mars than between Jupiter's moons. Can anyone point me at a source for this? And for energy requirements for other interplanetary journeys? Preferably something that I can use without breaking copyright?

Comments

[ffutures.livejournal.com]

OK, thanks, I may have a copy somewhere. I must be mis-remembering the Jupiter thing.