00:00Here's the concrete comparison. An astronaut on the ISS is constantly exposed to cosmic
00:06radiation. Every single day. Apollo astronauts, on the other hand, were only exposed to the
00:11Van Allen belts for a very short time, but it was a bit more intense. In the end, it's
00:17the total dose that counts. And now let's get to the numbers. NASA measured the radiation
00:22very precisely on all Apollo missions. Every astronaut wore dosimeters. Depending on the
00:29mission, the measured values ranged between 0.16 and 1.14 mSv. That is the total dose for the round
00:38trip combined. For comparison, a typical chest CT scan is around 7 mSv. A transatlantic flight is
00:47around 0.1. A person's annual dose from natural background radiation is around 2 to 3 mSv. That
00:56means an Apollo astronaut received about as much radiation on the way to the Moon as during a
01:02medical scan. So, we are very, very far from a lethal radiation dose.
01:11Voynices.
