JF Mezei wrote on Sat, 11 Aug 2018
22:12:03 -0400:

"Thickening" the atmosphere with CO2 or whethever to retain heat would
have a negative effect: solar panels would get less of the sun's energy.

The loss of solar efficiency would be worth it if you achieved a
shirt-sleeve atmpsphere on Mars. But if you still need pressurized
habitats, then making the oustide less cold at the expense of reducing
solar power efficiency is a trade off that designers of the habvitats
will have to debate.

Solar is marginal out at Mars anyway. Plan on nuclear.


--
"The reasonable man adapts himself to the world; the unreasonable
man persists in trying to adapt the world to himself. Therefore,
all progress depends on the unreasonable man."
--George Bernard Shaw