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Study: Mars Missions Should Be Limited to 4 Years to Protect from Radiation

Study: Mars Missions Should Be Limited to 4 Years to Protect from Radiation, VOA Learning English, 5 Sep 21,  A new study has found that future missions to Mars should be limited to four years to protect astronauts from harmful radiation.

The study also says that missions should be carried out during specific times to reduce the level of exposure to dangerous particles.

The U.S. space agency NASA currently has plans to send astronauts back to the moon. It also plans to one day send astronauts to Mars. Those plans include missions that would keep astronauts in space for long periods.

China has also announced plans to send astronauts to Mars by 2033. Such missions present great risks to humans because of the high level of radiation in space.

Radiation exposure can cause a series of health issues, including skin burns, heart problems and cancer. NASA has spent many years studying ways to protect human space travelers from radiation.

On Earth, we also experience exposure to radiation from the sun. But our planet’s magnetic field protects us from dangerously high levels.

Two main kinds of radiation can affect humans and equipment in space. One is produced by particles released from the sun. The other comes from high energy particles created by cosmic rays from outside our solar system. NASA says the second kind can be more dangerous to humans and more destructive to equipment.

In the new study, researchers used modeling methods to predict levels of radiation exposure during future space missions. They combined geophysical models of particle radiation with models for how radiation would affect human passengers and spacecraft…………………….

September 6, 2021 - Posted by | 2 WORLD, radiation, space travel

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