Scientists discover bacteria that ‘play dead’ and disrupt space cleanliness rules

A tiny microbe that can almost vanish from view has caught global attention. Scientists say this unusual organism can survive spaces meant to stay spotless. Many now wonder how such life persists in rooms built for spacecraft.

Can Tersicoccus phoenicis Survive Near Spacecraft?
Tersicoccus phoenicis is known for extreme dormancy. The bacteria can enter deep metabolic silence inside clean rooms. These facilities are among Earth’s most controlled spaces. Microbiologists at the University of Houston studied its behaviour. Their report appears in Microbiology Spectrum this month. They say the organism behaves like it is “playing dead”. This trick helps it avoid routine sterilisation checks.

What Makes This Bacterium So Hard To Remove?
Researchers say the microbe resists dehydration and starvation. It can remain stable without regular nutrients. It can also survive harsh sterilisation attempts. The organism revives when exposed to a specific protein. Scientists say this feature makes detection difficult. The species was first discovered more than a decade ago. It appeared in two clean rooms in Florida and French Guiana.

What Concerns Do Experts Raise About Space Travel?
Nils Averesch studies these microbes for his research work. He is an assistant professor at the University of Florida. He also works with the Astraeus Space Institute. He told phys.org that the findings are concerning. He says some microbes survive very austere environments. He adds their low metabolic states aid their survival. He believes survival on spacecraft surfaces seems more likely now.

Why Is This Discovery Important For Future Missions?
Averesch notes the bacteria do not form spores. He says this makes their strength more surprising. He believes other hidden survival methods may exist. He says these features remain poorly understood today. Scientists now question contamination risks on future missions. They say strict cleaning rules may need updates. They warn that microbes could reach other planets unnoticed.