Curiosity Took 65 Bacteria Species On Trip To Mars
You know you've got a microbiome. Did you know NASA's Curiosity rover does, too? A recent study of swabs taken from the rover before it launched found its surfaces contained 65 bacteria species, Nature News reports. It's not known whether any of those Earthly critters survived the journey to Mars.
Spacefaring Earth bacteria would only make space science harder. Engineers are supposed to put spacecraft like Curiosity through a stringent cleaning regimen before launch. Scientists don't want to contaminate other planets with Earth life forms.
They also don't want contamination in their own instruments, which could make it appear that they have detected alien life when they're really only measuring Earth-origin hitchhikers.
Yet certain species of bacteria are known to survive even NASA's cleanrooms. In addition, Space.com reported in 2011 that Curiosity may not have gotten as thorough of a cleaning as it should have.
Wondering about what remained on Curiosity even after cleaning, scientists from the University of Idaho and California's Jet Propulsion Laboratory swabbed different parts of the rover before sending it off.