Sedna, space probes?, colonies? what's next?

Ool wrote:
"Ian Stirling" wrote in message ...

Sorry, insolation = solar input.
Basically placing optical filters between the sun and earth, to
reduce the light at some wavelengths.
Yes, this is a big project.

If you could do that I'd suggest leaving the Earth alone and building
space habitats instead, in which you'd have much simpler control over
the weather and climate...

Once you start working out the numbers...
It turns out that in principle, you need at the most a few tons per square
kilometer,
For building habitats, you need on the order of tonnes per square meter.