[Paleo Conservative]

it is a simple concept capable with a 15 mile (similar) square mirror,

Wouldn't it be cool if a system of mirrors like that could be used to light up large areas on the Earth at night?

[no-to-illegals]

something of such a scale is only imagined....
never to be???

[KellyAdmirer]

It would be even cooler if the system of mirrors could be focused so as to fry Osama bin Laden in his cave.

[Dr.Zoidberg]

Wouldn't it be cool if a system of mirrors like that could be used to light up large areas on the Earth at night?

I'm by no means an enviropath, but I have to think any mirror reflecting light with the Sun's particular spectrum would play hobb with animals anywhere such a system were employed. Not to mention screwing with human circadian rhythms.

I'm just saying...

[ReignOfError]

Wouldn't it be cool if a system of mirrors like that could be used to light up large areas on the Earth at night?

No, not really. Animals including H. Sapiens get discombobulated when you mess with the balance of day and night, and I already spend more than enough on air conditioning, thanks anyway.

[ApplegateRanch]

Wouldn't it be cool if a system of mirrors like that could be used to light up large areas on the Earth at night?

And if they had the proper parabolic curvature, they could be used for (ahem!) "heating" certain smallish areas of the earth's surface. Let he who hath ears to hear....

[July 4th]

Wouldn't it be cool if a system of mirrors like that could be used to light up large areas on the Earth at night?

This is being done to some extent in a couple of places in Europe; one is in Italy. There's a town that's at the bottom of a steep valley, and its residents get little to no sunlight 365 days/year. They got grant money to build a big mirror array on the top of the valley to reflect sunlight down to the town.