Rex Kramer wrote:Are the stresses of space flight reduced to such an extent now that it won't kill a 90 year old?
They don't go nearly as far into space as astronauts going to the moon/ISS etc go. They go right to the edge for 10 minutes and then come back down. ISS is 400km up and they go a little above 100km I think-(the Kármán line is 100km, a widely used standard to determine if an activity is aeronautical or astronautical).
So all that means less power needed going up therefore less g force and stress etc