The Curiosity Rover has just made it known that Mars contains dangerous levels of radiation which may make human exploration impossible.
It seems that while radiation levels on the surface of Red Planet itself are safe for humans, actually getting there is what causes a problem. Apparently, if astronauts tried to travel to Mars they would experience radiation levels which would equal getting a CT scan every five days, despite being enclosed in a protected aircraft!
The trip to Mars is 253 days and astronauts would be hit with 466 milliSieverts of high energy galactic cosmic rays and particles! That’s only to get there! On the way back, they’d be hit with another 466 milliSieverts!
These new findings mean that aircrafts with far more shielding need to be developed before man can visit Mars and hopefully, develop a colony there. At least there’s still a chance for man to visit Mars!