８０ Exposure【Space Travel】Dialogue with the Universe
・The amount of exposure on the moon is more than 100 times the earth.
【Reference】Planetes(Japanese Comic)
・The average annual exposure due to natural radiation of the world is 2.4mSv. So the moon is that over 240mSv. 250mSv is close to the upper limit of the dose exposure of emergency (Radiation Council report in March 2011).