"Data from a spectrometer aboard the European Space Agency's Mars Express probe appears to have recorded radiation indicating pungent ammonia gas in Mars' atmosphere, BBC News Online reports.I mean I guess god could have intelligently designed microbes for Mars, but sort of seems odd, don't you think?
Since ammonia can survive for only a few hours in the Martian atmosphere before breaking down, it must be constantly replenished from one of two possible sources: active volcanoes - of which none have been found on Mars - or microbes.
'Ammonia could be the key to finding life on Mars,' a NASA scientist told the BBC. 'There are no known ways for ammonia to be present in the Martian atmosphere that do not involve life.'
Ammonia is a compound of nitrogen and hydrogen atoms. Nitrogen is rare in the Mars environment, and researchers say the presence of ammonia may indicate that Martian microbes may be hoarding it."