Correct, I misspoke: My first use of "orbit", I should have said "the area up around the planet, not down on the surface. The difference in difficulty (mainly,

Correct, I misspoke: My first use of "orbit", I should have said "the area up around the planet, not down on the surface. The difference in difficulty (mainly, fuel requirements) between a flyby and an orbit is a crucial distinction often overlooked.