The tests were formulated to look for microbial life similar to that found on Earth.
He is an expert on microbial life at high temperatures.
Taken together, though, the pieces made a compelling case for microbial life on Mars, the scientists said.
It will see whether Mars has, or ever had, an environment able to support microbial life.
However, microbial life is present almost everywhere, including many deserts.
Traditionally, such projects have been run by geologists with little interest in microbial life.
Both dry and moist heat are effective in eliminating microbial life.
On Mars, microbial life remained more peaceful but less interesting.
It looks like the microbial life may have gotten a start at that time.
Despite this, a 2006 study suggests certain microbial life is less active in artificial turf.