Reply to post: Re: I'm curious

Purple glistening plasma, you say? Orion plummets back to Earth


Re: I'm curious

If you need to slow down enough to enter orbit when you get back to Earth, you have to haul the fuel to do that with you to Mars and back. You also need extra fuel to accelerate that fuel out of Mars orbit to get back, and extra fuel to decelerate both those quantities of fuel into Mars orbit when you get there, and still more to accelerate all three lots of fuel out of Earth orbit and towards mars in the first place.

Much less mass requirement to take your re-entry vehicle along with you, not bother with getting into Earth orbit when you get back, and use a beefy heat shield to re-enter directly.

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