How many spacecraft will successfully make it to Mars during the 2028-29 Hohmann Transfer window?
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4
Ṁ5272029
1D
1W
1M
ALL
84%
1 or more
55%
2 or more
42%
3 or more
Mars must be final destination, no flybys. Must be working in some capacity upon arrival to Mars (can't blow up on the launch pad or fail to make it out of Earth orbit). It doesn't have to land successfully, just get to Mars, so orbiters count.
I will add more options if there are many missions planned closer to the transfer window date.
See http://www.clowder.net/hop/railroad/EMa.htm for more windows.
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Wikipedia currently lists two planned:
https://en.wikipedia.org/wiki/Exploration_of_Mars#Launch_windows
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