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Author Topic: Feedback: Life on Mars some points and possible solutions  (Read 587 times)

Offline thedoc

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arnold  asked the Naked Scientists:
   1) The atmosphere is much thinner on mars so heat loss by convection would be very greatly reduced. So the cold is not as big a problem as suggested.

2) To seriously colonise Mars, humans would need to spend at least a third of each day active in a 1 G environment. (Sleeping and the rest of the time in one third G)

This could be achieved by building a 1 G spacecraft (a spinning wheel design and landing it on mars using huge parachutes and retrorockets. The ship would be very large indeed and would need to be constructed in space much like the international space station which is quite large. The 1G ship would be at least five times the size of the ISS maybe ten times but this is feasible given world cooperation.

3. Direct solar heating could achieved by via a clear dome on the landed craft and martian rocks used to store the heat like a storage heater. Using solar electric panels would be wasteful for heating purposes, direct solar heating is best.

4. The martian winter is one of our years long so best to set up camp not far from the equator to minimise the problem. There is probably frozen water there too.

5. Mars could be terraformed by seeding genetically modified lichens and bacteria. This could create an oxygen rich atmosphere in a fairly short time of maybe 100 years. The planet would also warm up and seas would form.

If you have any contacts in NASA then I would be grateful if you could put them in touch. I would like to explore my idea for a constant 1G spaceship which could make interplanetary trips and eventually be landed on Mars. The difference between other concepts and mine is the craft would have a constant 1 G through an acceleration range of  _ 1G. (Very comfortable)
Regards
Gareth

   
 
What do you think?
« Last Edit: 01/11/2015 04:50:01 by _system »


 

Offline alancalverd

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Re: Feedback: Life on Mars some points and possible solutions
« Reply #1 on: 01/11/2015 09:03:21 »
Convective heat loss isn't a problem if you are wearing a space suit (which you must), but radiative heat loss is very significant in the absence of clouds or a re-radiating atmosphere. However the Martian atmosphere contains 15 times the pressure of carbon dioxide in the Earth's atmosphere, and receives 25% of our heat input from the sun, so if the global warming terrorists are correct, it should be warmer, not colder, than here!

Little point in developing an artificial 1g environment if you want to colonise the place. It's unlikely that any homo species that was born on Mars could survive on earth, but the point of colonising is not to provide future inhabitants for the place you have just left.

Would you really need to genetically modify your lichens? There are plenty of arctic species that thrive on low temperatures and limited sunlight: better the devil you know!
 

Offline chiralSPO

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Re: Feedback: Life on Mars some points and possible solutions
« Reply #2 on: 01/11/2015 16:56:00 »
However the Martian atmosphere contains 15 times the pressure of carbon dioxide in the Earth's atmosphere, and receives 25% of our heat input from the sun, so if the global warming terrorists are correct, it should be warmer, not colder, than here!

You know that is a blatant mis-interpretation of climate science. You know full well that the 25% insolation factor is much more significant than the 15 times CO2 factor, and that there are also other greenhouse gases in our atmosphere!
 

Offline alancalverd

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Re: Feedback: Life on Mars some points and possible solutions
« Reply #3 on: 03/11/2015 00:19:01 »
....which is why I am not an AGW terrorist.
 

The Naked Scientists Forum

Re: Feedback: Life on Mars some points and possible solutions
« Reply #3 on: 03/11/2015 00:19:01 »

 

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