Reply to post: Re: TWO Gateways required to save costs...

2001 fiction set to be science fact? NASA boffin mulls artificial intelligence to watch over the lunar Gateway

KarMann Bronze badge

Re: TWO Gateways required to save costs...

Because the ISS is already in a high-inclination orbit (because Baikonur, which is fairly far north), poorly suited for trans-lunar injection. It'd cost a bit more delta-V both for a Florida/Texas launch to match ISS orbit, and to lose the north/south momentum to put you on course for the Moon. Although, now that I think about it, twice a month, the orbit would line up with the Moon's so that you could TLI from the northernmost or southernmost point in the orbit, and not be too wasteful in that regard. But there would still be the launch cost.

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