It's still a daunting prospect for those expecting to return from mars to earth.

larkeith · on Oct 8, 2017

I had been somewhat under the impression that current colonization plans were one-way deals. Agreed that it'll be an issue once we have the infrastructure and desire to return to Earth.

dcsommer · on Oct 9, 2017

I highly doubt people born and raised on Mars (if it is even possible to live long-term there) could ever live on Earth -- simply with respect to gravity and developmental consequences.

KGIII · on Oct 9, 2017

Prior to colonization, I'd expect there to be visits which do not result in permanent residency on Mars.

rocqua · on Oct 10, 2017

It's an interesting question whether the first person to set foot on mars will expect to return to earth.

I expect it would be easy to find people willing to make a one-way trip. However, I have two reservations. The first is the acceptance of society of sending someone to their death. The second is whether it is responsible to use essentially suicidal people for such a mission. These missions take a lot of mental resilience, and generally, we consider being suicidal to be a mental illness.