JF Mezei wrote on Fri, 10 Aug 2018
13:20:08 -0400:

On 2018-08-09 16:52, Fred J. McCall wrote:

It's all about time scales. Can you add enough gas fast enough and
will it lose it slowly enough to be worthwhile.


You don't build and then board a leaky lifeboat unless you are damned
sure another boat will come in before it sinks.


Sorry, but that makes no sense.


Why spend the money/effort to add atmpsphere to Mars knowing that it
will be lost and you'll either have to continuously add to it, or
eventually leave Mars to get onto another planet?


Because if you can add enough gas in a few generations and it takes
100,000 years to bleed off, that's a pretty good deal.


Much simpler to build a domed city then to terraform Mars.


Well, no, because then you just get some little domes instead of an
entire planet.


And on a more basic question: assuming unlimited supply of compressed
air being shipped to Mars, is it realistic to expect liveable air
pressure at ground when you consider Mar's reduced gravity and how much
more air your would need above you to achieve anything near 14.7psi ?

If you can't achieve proper air pressure at ground, it is worth the
effort to try to terraform the planet since you wouldn't be able to go
outside without a space suit ?


My God, do you ever bother to research anything even a little bit
before you start nit picking? Here, read this for a start to
educating yourself:

https://en.wikipedia.org/wiki/Terraforming_of_Mars


--
"Ignorance is preferable to error, and he is less remote from the
truth who believes nothing than he who believes what is wrong."
-- Thomas Jefferson