Uranus and Neptune

On 5/7/12 9:48 AM, brooksn wrote:

> Now you're left with a warm mostly water super Earth. The question being
> will it remain warm enough? Still at probably 9 Earths, I would expect
> it still to be pretty active geologically. Of course sunlight would
> still be very very low and would need to be considered.

Since we're mega-engineering, I'd think it would be easier to either (a)
put giant mirrors in co-orbit with it to focus the Sun's light, or (b)
put one or more giant fusion reactors (which perhaps we could feed with
all that hydrogen we pulled out of the atmosphere) into orbit around it,
providing light and heat directly.

The rest of your post needs more thought than I can spare it at the
moment, but I'll consider it more later... it's an interesting idea.

Best,
- Joe