It seems a fact that any astronauts going to Mars will return to Earth on a terrible health condition.
Just check the description of Scott Kelly on his own words:
"When I'm finally vertical, the pain in my legs is awful, and [...] it feels as though all the blood in my body is rushing to my legs, [...] they are swollen and alien stumps, not legs at all".
https://www.smh.com.au/lifestyle/astronaut-scott-kelly-on-the-devastating-effects-of-a-year-in-space-20170922-gyn9iw.htmlAnd he just spent one year on the space station, still protected by Earth magnetic field. Imagine 18 months in deep space with 0 gravity and solar and cosmic radiation bombardments and about 3 more months on Mars waiting for the return window:
https://image.gsfc.nasa.gov/poetry/venus/q2811.htmlBut when we think that from the initial crew of 237 men on the first world circumnavigation only 18 survived (a death toll of more than 92%:
https://en.wikipedia.org/wiki/Ferdinand_Magellan#Survivors) we can understand why Elon Musk doesn't seem too much concerned with the health of the first Mars astronauts.
He knows he will find people willing to go and ruin their health for this historical opportunity. And he thinks that it will be worthy.
But SpaceX still lacks enough money to finish the Starship and sent it to Mars on a crewed voyage.
It's because of this that the news about the changing policy of NASA about using commercial rockets to go around the Moon next year can be financial decisive to SpaceX and to the Mars voyage:
https://www.space.com/nasa-eyes-private-rocket-orion-moon-trip.htmlBecause if NASA decides to contract SpaceX for this (ULA is still a serious candidate, since they built the Orion capsule; but they might not have enough time to prepare their Delta IV Heavy to do the trip), they probably will jump on board for Mars too.
If NASA accepted to sacrifice Scott Kelly health only for an experiment, they probably will accept even worst conditions to a few of their astronauts to be able to send them to Mars.
And even if they won't, Musk will have the necessary money to go to Mars, after all the money he will receive from NASA to send its astronauts and cargo to the Lunar Orbital Platform-Gateway and to the Moon.
This is extremely naive and frankly sort of an anthropomorphic solar system sized ego trip. It's similar to that of an individual climbing Mt Everest just to be able to say he did it, as opposed for some scientific or monetary goal.
It would be like basking in glory to recreate Apollo. We've been there, done that and done a pretty good job of it. The real question is what is today's equivalent push forward equal to the Apollo program of 1970?
What's required, no if ands or buts, is to create and place robotic equipment and materials production equipment on Mars and or the Moon and show that they can produce the raw materials needed to support
THE JOB.
The biosphere habitat is only required to be delivered or manufactured if
THE JOB to be done require men on site.
The question to be answered is simple. What is
"THE JOB?"I know what my answer would be, but what is yours?