Radiation hazard will probably prevent manned missions to Mars anytime soon.
http://www.usatoday.com/story/news/...akes-manned-mission-to-mars-unlikely/2847577/
http://www.usatoday.com/story/news/...akes-manned-mission-to-mars-unlikely/2847577/
Menaningless without information in what period of time you got that dose.100 mSv were already linked to higher cancer rates.
Menaningless without information in what period of time you got that dose.
And where this sensor is installed, does also affect the radiation that you measure. A human in a spacecraft with some radiation shielding can get a much lower equivalent dose than a virtual human on the outside of a probe in outer space.
And most critically, shielding doesn't actually have to be specialized. Generally speaking, any mass in between you and the radiation source will help with shielding.
Wrong.
The type of radiation is extremely important in space.
Gamma Rays will pass through almost everything. Lots of lead can't block it, but can reduce its intensity to near-zero. It is just futile because gamma rays also pass through humans without much interaction, that is why they have a much lower factor in the calculation of the equivalent dose.
Radiation of charged particles (beta, proton) will get stopped by lead so quickly, that you will get grilled by a much worse X-Ray radiation, because the energy of the charged particles is turned into Bremsstrahlung.
A few mm of aluminum or polyethylen foam (low density is important) on the other hand can reduce the intensity of such radiation enough.
Why was there all of this talk about the Inspiration Mars mission using fecal waste as radiation shielding?
No idea, how they expected this to work.
If properly done, you can get a good radiation shelter for CMEs, but if you fully enclose the spacecraft, the cosmic radiation would ruin your health.
CMG= coronal mass ejection?
So a full spacecraft shielding wouldn't work mass-wise, but a small shelter might?
Solution: Super conductor coil generating it's own massive magnetic field.
You're welcome.