Skip to page content Mission Information


Matroshka-1 (Matroshka1)
Principal Investigator
Research Area:
Radiation biology
Species Studied
Scientific Name: Homo sapiens Species: Human

An astronaut’s skin absorbs as much as 20 times more space radiation than do the organs deep inside the body. So what is the actual dose an individual receives? Based on a determination that radiation dose declines steeply in the first 8 mm of skin, researchers calculated an average dose rate for each critical organ. The calculated skin dose rate of the outermost 3 mm, about 1 mGy/day, is by far the highest, followed by that for the eye. Dose rates for other organs, with the exception of breast and salivary glands, range from 0.2 to 0.3 mGy/day. These depth-dose distribution characteristics can serve as benchmarks for future mission medical planning.

++ -- View more

Space suits
Radiation dosage
Cosmic radiation
Thermoluminescent dosimetry

Data Information
Data Availability
Archive is complete. No data sets are available for this experiment. Please Contact LSDA if you know of available data for this investigation.

Absorbed dose
Dose distribution
Dose rate
Effective dose
++ -- View more

Mission/Study Information
Mission Launch/Start Date Landing/End Date Duration
Expedition 10 10/13/2004 04/24/2005 193 days
Expedition 11 04/14/2005 10/10/2005 179 days
Expedition 8 10/18/2003 04/29/2004 195 days
Expedition 9 04/18/2004 10/23/2004 188 days

Additional Information
Managing NASA Center
Johnson Space Center (JSC)
Responsible NASA Representative
Johnson Space Center LSDA Office
Project Manager: Pamela A. Bieri
Institutional Support
European Space Agency (ESA)
Proposal Date