Paul F. Dietz wrote:
Rich wrote:

L1 is unstable, so keep shades there would require active stabilization,
probably involving light pressure.

That's a lot of light pressure.

Sure. But a solar shade necessarily experiences a lot of light pressure.

OK, I had thought you were referring to the moon, not solar shades. My mistake.

I don't see how the moon at earth L1 could provide what "you'd want".

The moon, no. You'd want a much much lighter object, and more area.

I'm not sure it makes much difference to the earth whether the shade
reflects the light or absorbs it. But I guess it'll get hot enough
even if it's reflective.

Cheers

Rich

Paul