Dosis radiation monitor

A number of radiation detectors dotted around the Station are recording levels of cosmic rays to create a map of these harmful rays and help design more radiation-resistant spacecraft of the future.

This image shows the orange Dosis-3D passive radiation monitor inside the International Space Station.

Radiation levels in space are up to 15 times higher than on Earth. As soon as humans leave the protective shield that is Earth’s atmosphere, space radiation becomes a serious concern.

Dosis-3D helps to understand space radiation and how it penetrates the Space Station walls. Active and passive radiation detectors are used to map radiation in all modules.

The European Columbus laboratory is monitored by 11 passive dosimeters. The dosimeters are about the size of a pack of playing cards and attached to the walls of Columbus with Velcro. The detectors record how much radiation has been absorbed in total during the period they are in space.

This experiment has been monitoring radiation levels for a number of years and after each six-month crew rotation, the detectors are replaced to record changes in radiation.

In addition to the passive detectors, Dosis-3D uses active dosimeters that measure fluctuations in radiation levels over time. Data from all Station partners is shared to create as complete a picture of space radiation as possible.