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Hey, I've been tinkering with this little program for quite some time.
http://www.orbitersim.com]www.orbitersim.com
Orbiter is a very fun and functional spaceflight simulator with many modifications availible. I've found that its also rather challenging.
Oh yes, there is a MarsDirect module for it.
Have fun
-Hazer
In the interests of my species
I am a firm supporter of stepping out into this great universe both armed and dangerous.
Bootprints in red dust, or bust!
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