From NEO to GEO --- an SPS scenario

What about a tether that straddles the L1 point, with one end in the
Lunar gravity well, the other in Earth's. Weights on each end could be
raised and lowered to help stabilize it in one dimension. Would that be
sufficient or just make it worse?

All the questions on this list about orbital mechanics makes me wonder
if there is any half-way decent open-source software out there to do
basic stuff like this with a reasonable degree of accuracy. I doubt
there's any such software that would include long tethers, but something
would be nice.

Andrew

A Question: Would tethers work for keeping the solar cells, reflectors,
etc. oriented at the Earth-Sun L-1 point? If so, that would seem to
simplify the requirements for an O'Neill type colony there. Sincerely,
Jay

This is not obvious.

It might actually complicate things.

The L-1/2 points are not stable, so stationkeeping is reqired. The
two ends of the tether will require independent staitonkeeping. This
will be difficult to coordinate.

Might be easier to have a single platform with active attitude control
system.