I think that to the degree people think of that phrase at all, they assume it’s in the vicinity of the earth-moon system, but technically, of the Lagrange points, only L-1 is part of it. L-2 is in trans-lunar space, and I’m not sure how you’d characterize Ls 3, 4 and 5. The thought was prompted by this post on transgendered and cisgendered people.
9 thoughts on “Cis-Lunar Space”
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Is there a name for the smallest ellipsoid that holds all 5 L-points as well as the two bodies?
I think L3 would be in para-lunar space and L4 and L5 would be in ortho-lunar space.
All of the Earth Moon Lagrange points exist as a result of the Earth Moon system so I don’t have a problem with cis lunar space encompassing all of them.
I gather cislunar is just everything at or within the distance of the orbit of the Moon. That would include L3, L4, and L5, but exclude L2.
Do all semi-stable orbits (Lissajous, halo, hidney bean, etc) around L3, L4, and L5 pass in and out of cis-lunar space?
Huntress referred to it as Geospace in his IAA study The Next Steps In Exploring Deep Space. Sounds like a good term to me, though it doesn’t seem to have caught on. Earth-moon system works for me too, but we’re really interested in the high energy orbit part of it.
The realm of TerraSelene!
“Greater Metropolitan Earth”
http://www.foxnews.com/story/2003/02/06/into-wilderness/
Not BEO.