All this will tell us is that life can survive the trip to Mars or Europa. We already know this to be the case ( microbes are tough) and asteroid strikes provid

All this will tell us is that life can survive the trip to Mars or Europa. We already know this to be the case ( microbes are tough) and asteroid strikes provide the means of getting Earth life to these planets/ moons. At this point I would be more surprised if we don't find microbial life in the solar system outside of Earth.