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How much radiation are the astronauts exposed to on the ISS? originally appeared on Quora: the place to gain and share knowledge, empowering people to learn from others and better understand the world.

Answer by Robert Frost, works at NASA, on Quora:

For ISS astronauts, measurements from the crew’s personal dosimeters indicate a range from 12 to 28.8 milli rads per day.

The number is not a constant because radiation comes from more than one source. There are galactic cosmic rays (GCR) and solar cosmic rays (SCR). There is also radiation trapped within the magnetic field, auroral precipitation, and albedo radiation. Activity of the sun and location of the ISS both cause significant variations in the amount of radiation that impinges on the International Space Station. Radiation is higher at higher latitudes, so, since the ISS flies at an inclination of 51.6 degrees, it experiences more radiation than it would at 28 degrees (standard inclination for Space Shuttle flights). Altitude also affects the dosage. We’ve set a danger line at 500 km (312 mi). At 500 km, the average daily dose is around 50 milli rad (5x10E-4 Sv). Shielding within the different ISS habitable modules also varies.

There are locations over Earth, such as the South Atlantic anomaly (SAA), where radiation is higher at lower altitudes. In fact, a significant portion of the radiation experienced by the crew occurs when their orbit takes them over the SAA. At 440 km, within the SAA, the radiation can be 1000 times as intense.

Much of the solar cosmic radiation is deflected by the Earth’s magnetic field, which, fortunately, is above low Earth orbit (LEO). An astronaut on the moon could receive a lethal dose of radiation in just a couple of hours, during a solar flare.

The Multilateral Medical Operations Panel (MMOP) monitors and sets the standards for crew exposure. They track to separate limits that are referred to as deterministic and stochastic. Deterministic refers to acute effects such as rashes and burns and stochastic to long-term effects, such as cancer. It can get a little confusing because they use different units for each concern. But, for example, they set a 30 day exposure limit of 0.25 Sv and an annual limit of 0.5 Sv and a career limit of 1 Sv. A sievert (Sv) is equivalent to 100 rads.

This question originally appeared on Quora – the place to gain and share knowledge, empowering people to learn from others and better understand the world. You can follow Quora on Twitter, Facebook, and Google+. More questions:

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Just how much radiation are the astronauts exposed to on the ISS? initially appeared
on Quora:(******************* ) the location to get and share understanding, empowering individuals to gain from others and much better comprehend the world

(******************** ) Response(***************** )by Robert Frost, operates at NASA, on Quora:

For ISS astronauts, measurements from the team’s individual dosimeters show a variety from (********************************************************** )to (******************************************************* ).8 milli rads each day.

The number is not a continuous due to the fact that radiation originates from more than one source. There are stellar cosmic rays (GCR) and solar cosmic rays( SCR). There is likewise radiation caught within the electromagnetic field, auroral rainfall, and albedo radiation. Activity of the sun and area of the ISS both trigger substantial variations in the quantity of radiation that strikes the International Spaceport Station. Radiation is greater at greater latitudes, so, given that the ISS flies at a disposition of516 degrees, it experiences more radiation than it would at 28 degrees (basic disposition for Area Shuttle bus flights). Elevation likewise impacts the dose. We have actually set a threat line at 500 km (312 mi). At 500 km, the typical day-to-day dosage is around 50 milli rad (5×10 E-4 Sv). Protecting within the various ISS habitable modules likewise differs.

(************************ )There are areas over Earth, such as the South Atlantic abnormality (SAA), where radiation is greater at lower elevations. In truth, a substantial part of the radiation experienced by the team takes place when their orbit takes them over the SAA. At 440 km, within the SAA, the radiation can be 1000 times as extreme.

Much of the solar cosmic radiation is deflected by the Earth’s electromagnetic field, which, thankfully, is above low Earth orbit (LEO). An astronaut on the moon might get a deadly dosage of radiation in simply a number of hours, throughout a solar flare.

The Multilateral Medical Operations Panel( MMOP) displays and sets the requirements for team direct exposure. They track to separate limitations that are described as deterministic and stochastic. Deterministic describes severe impacts such as rashes and burns and stochastic to long-lasting impacts, such as cancer. It can get a little complicated due to the fact that they utilize various systems for each issue. However, for instance, they set a 30 day direct exposure limitation of 0.25 Sv and a yearly limitation of 0.5 Sv and a profession limitation of 1 Sv. A sievert (Sv) is comparable to 100 rads.

This concern initially appeared on Quora – the location to get and share understanding, empowering individuals to gain from others and much better comprehend the world. You can follow Quora on Twitter, Facebook, and Google+ More concerns:

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588921282799″ >

Just how much radiation are the astronauts exposed to on the ISS? initially appeared on Quora : the location to get and share understanding, empowering individuals to gain from others and much better comprehend the world

.

Response by Robert Frost , operates at NASA, on Quora :

For ISS astronauts, measurements from the team’s individual dosimeters show a variety from 12 to 28.8 milli rads each day.

The number is not a continuous due to the fact that radiation originates from more than one source. There are stellar cosmic rays (GCR) and solar cosmic rays (SCR). There is likewise radiation caught within the electromagnetic field, auroral rainfall, and albedo radiation. Activity of the sun and area of the ISS both trigger substantial variations in the quantity of radiation that strikes the International Spaceport Station. Radiation is greater at greater latitudes, so, given that the ISS flies at a disposition of 51.6 degrees, it experiences more radiation than it would at 28 degrees (basic disposition for Area Shuttle bus flights). Elevation likewise impacts the dose. We have actually set a threat line at 500 km (312 mi). At 500 km, the typical day-to-day dosage is around 50 milli rad (5x 10 E-4 Sv). Protecting within the various ISS habitable modules likewise differs.

There are areas over Earth, such as the South Atlantic abnormality (SAA), where radiation is greater at lower elevations. In truth, a substantial part of the radiation experienced by the team takes place when their orbit takes them over the SAA. At 440 km, within the SAA, the radiation can be 1000 times as extreme.

Much of the solar cosmic radiation is deflected by the Earth’s electromagnetic field, which, thankfully, is above low Earth orbit (LEO). An astronaut on the moon might get a deadly dosage of radiation in simply a number of hours, throughout a solar flare.

The Multilateral Medical Operations Panel (MMOP) displays and sets the requirements for team direct exposure. They track to separate limitations that are described as deterministic and stochastic. Deterministic describes severe impacts such as rashes and burns and stochastic to long-lasting impacts, such as cancer. It can get a little complicated due to the fact that they utilize various systems for each issue. However, for instance, they set a 30 day direct exposure limitation of 0. 25 Sv and a yearly limitation of 0.5 Sv and a profession limitation of 1 Sv. A sievert (Sv) is comparable to 100 rads.

This concern initially appeared on Quora – the location to get and share understanding, empowering individuals to gain from others and much better comprehend the world. You can follow Quora on Twitter , Facebook , and Google + More concerns:

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