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NASA wants to mobilize all available resources for a manned flight to Mars, but is still questionable whether astronauts have grown the year-long stay in space at all
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The U.S. space agency Nasa wants to mobilize in the coming years, all available funds for manned missions to Mars. “A manned mission to Mars is the ultimate goal of humanity is currently in our solar system,” said NASA chief Charles Bolden to kick off a three-day conference at the University of Washington. Such a mission for NASA by 2030 had therefore “priority”.
As he had proposed as NASA’s budget for the coming year $ 17.7 billion (13.5 billion euros well), U.S. President Barack Obama makes it clear that he is “a dynamic and coordinated strategy for the exploration of Mars” support, Bolden said.
Another key objective Bolden called the development of a space ship that ever allows people to cover the distance to Mars. NASA now wants but first test how the gravity affecting the longer duration on the human body.
far astronauts from around the world stay up to six months on the International Space Station. But the only way to Mars lasts 500 to 600 days. Two veterans are now to find out how the human body endures the long term weightlessness.
space veterans take the test
The American Scott Kelly and Russian Mikhail Korniyenko will spend a year on the International Space Station in the spring of 2015. Both are experienced, but even, relatively speaking, elderly astronaut: Kelly will be at the start of 51st His colleague Korniyenko is even four years older.
The two-year training for the mission began in 2013. The long-term mission goes back to an initiative of the Russians. The results will shed light on the working ability of crews and risks for future flights to asteroids and eventually to Mars.
A study of 27 astronauts who had spent an average of 108 days on board the ISS or Space Shuttle has, however, been shown that longer stays in weightlessness in astronauts changes can cause to the eyes and brain.
In the skull the cerebrospinal fluid pressure rises
researchers at the University of Texas have found that the changes in the so-called intracranial hypertension are similar. In this problem, which mainly affects obese women, increases in the skull for unknown reasons, the cerebrospinal fluid pressure. This can cause some headaches or damage the optic nerve.
date was already known that smother stays in space, bone density and muscle mass. Now, researchers examined brain and eyes of astronauts by magnetic resonance imaging (MRI). Abnormal findings, they found mainly in those astronauts who spent more than 30 consecutive days in weightlessness.
for the optic nerves extremely harmful
Every Third, the cerebrospinal fluid had spread in the optic nerve, at every fifth well, the back of the eyeball was flattened and at approximately every seventh of the optic nerve was bulged.
addition, the researchers found changes in the pituitary gland, are formed and stored in the different hormones in eleven percent of these astronauts. The abnormalities may limit the duration of space travel, the researchers involved in the study said.
Whether the person is physically and mentally strong enough to fly to Mars, so it must be still to be determined. The previous findings raise doubts.
So far, only unmanned rovers were sent to Mars. Last landed in August 2012, the NASA research robot “Curiosity” on the Red Planet. He will search for signs of life and thus primarily of water.
one-way trip
fancy a trip to Mars with no return?
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Photo: AFP NASA chief Charles Bolden
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