Traveling to Mars increases risk of cancer
SAN ANTONIO - astronauts to Mars will be exposed to radiation and have increased risk of cancer. Research by American scientists has shown. The study appears on Friday in the authoritative magazine Science. During the 1.5 year trip to Mars and back the astronauts will be exposed to 0.66 sievert radiation. That is 220 times as much as a normal man in a year. The dose may further increase when the astronauts on the surface of Mars. When an exposure increases with 1 Sievert the risk of cancer will increase with 5 percent. According researcher Cary Zeitlin, must the problem of radiation in space be solved before we send astronauts on a journey to Mars.
During His/her career an astronaut may not exceed the 3 percent risk level. This is a policy of NASA. A Mars journey can exceed the limit, NASA recognized this on Thursday. NASA will keep researching the problem to find a solutions. During the trip to Mars the astronauts get especially galactic cosmic radiation. The dose is not high, but astronauts are exposed to it constantly. It is very difficult to protect the astronauts against this radiation. Even a 30 centimeter thick wall of aluminum will give little to no protection, according to Zeitlin. Also will astronauts be exposed to solar flares, they need special place where the can hide for this radiation. It is the first time that the radiations on the way to Mars is measured. The scientists used a special instrument on board the Curiosity. The trip of 560 million kilometers lasted 253 days. There are plans in the far future to set foot on Mars. President Barack Obama told in 2010 that he believes that man can travel to mars and back in the 2030's. The problem is that there is no capsule developed at this moment in which the journey can be made. Also it is not yet clear what the effect of weightlessness is on the astronauts over a long period.
Late 1990's Colonel Corso made the following statement about man traveling in space during an interview with Art Bell Coast to Coast AM.
Go to 1:52 in the video to listen to the statement Corso made.