Are you concerned with Earth’s atmosphere contamination when bringing back rocks from Mars ? Here is an interesting article on the sterilisation applied from Earth toward Mars. It is critical in a mission designed to find life on Mars. Go and have a look.
http://www.esa.int/ESA_Multimedia/I
Credit : ESA
mages/2020/04/Sterilisation_for_planetary_protection
Published on April 07, 2020 02:06