Radiation isn't really a problem we can shield against that.
Unless I'm missing something?
what all of you are missing is what happens to the human body when its in outer space for long periods of time. its harmful to us. so unless they can figure that out too. it wont be worth the risk to go out there on a commercial flight. purely exploration basically risking your live and your heath.
http://www.thewire.com/national/2014/01/outer-space-bad-for-people/357493/
According to the
Times, a recent "unknown unknown" — what scientists call unexpected complications — has reminded scientists that we still don't know how bodies will react to extended stints in outer space. Specifically, they are talking about two astronauts on an extended mission who discovered that their vision was failing:
In 2009, during his six-month stay on the International Space Station, Dr. Michael R. Barratt, a NASA astronaut who is also a physician, noticed he was having some trouble seeing things close up, as did another member of the six-member crew, Dr. Robert B. Thirsk, a Canadian astronaut who is also a doctor. So the two performed eye exams on each other, confirming the vision shift toward farsightedness. They also saw hints of swelling in their optic nerves and blemishes on their retinas. On the next cargo ship, NASA sent up a high-resolution camera so that they could take clearer images of their eyes, which confirmed the suspicions. Ultrasound images showed that their eyes had become somewhat squeezed.
Eye squeezing is something to be avoided, we think.
The known risks of space travel include increased exposure to radiation, which could put space travelers at higher risk for contracting cancer (and possibly brain damage) than their earth-bound counterparts. Also: weakened bones, a malady that researchers think can be counteracted by regular exercise and osteoporosis medication. Scientists suspect that simulating gravity on spacecrafts would solve the ocular problems, but are hesitant to do so
because creating gravity in space means "spinning the spacecraft like a merry-go-round," which, understandably, would "add complexity to a mission and raise the potential for a catastrophic accident."
Garbage