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View Diary: Historic SpaceX Launch Scheduled for Tomorrow Morning (+Sweet Rocket Pics) (30 comments)

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  •  The geometry of that escapes me. (0+ / 0-)

    I'll just take your word for it.

    Always apart, always asking Why.

    by Troubadour on Sat Sep 28, 2013 at 03:40:57 PM PDT

    [ Parent ]

    •  ns (1+ / 0-)
      Recommended by:
      Troubadour

      Well, it's exploiting the obliquity of the Earth in order to change the orbit's right ascension of the ascending node in such a way that the vector normal to the orbital plane does not change its orientation with respect to the sun. (This change in the right ascension happens in all orbits, so they feel that they might as well exploit it if they want to keep a satellite perpetually in sunlight or something.)

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