Following conditions on the surface of Mars

Following launch, the microbes are firstly exposed to harsh
interplanetary conditions of solar UV irradiation, extreme desiccation, extreme
temperature variation Furthermore,
at post landing, the conditions on the surface of Mars are not conducive to
life and are considerably worse for the microbes than the journey through
interplanetary space. Recent studies have reported a variety of biocidal
conditions on Mars  and include;
extreme diurnal temperature fluctuations, solar particle events, solar UVC
irradiation, low pressure, extreme desiccating conditions, cosmic rays, solar
UV-induced volatile oxidants such as perchlorates. The martian surface has particularly
high salt levels (e.g., MgCl2, NaCl, FeSO4, and
MgSO4), high
acidity and high concentrations of heavy metals. high CO2concentrations in the global atmosphere. Currently, we know very
little about the terrestrial microorganisms typically found on spacecraft
surfaces and whether these microorganisms would be able to grow, survive and
replicate under conditions encountered on the surface of Mars