A cleanroom fungus survived several simulated Mars conditions
Researchers tested fungal spores isolated from NASA spacecraft assembly cleanrooms under simulated space and Martian conditions. Aspergillus calidoustus survived several combined stresses, including Martian atmosphere, regolith, radiation, and dry-heat exposure; the combination of extreme cold and high radiation was lethal. The experiments identify a planetary-protection risk under laboratory simulations, not evidence that the fungus has survived on Mars.
The record ends here. Everything below this line is invented.
What if a spacecraft's cleanest room still carried a passenger no checklist could see?
Part one
The Cleanroom Spore
Tari signed the cleanroom door log before the launch crew arrived. The Mars lander had passed every bacterial-spore test, and the fungus panel was still processing. Her checklist now included a second swab from each warm surface, a rule added after years of planetary-protection reviews.
One plate showed a single dark colony. The organism had come from the assembly room, not the lander, and the lab had to decide whether it could have survived the journey. The new simulation suite tested cold, radiation, dry heat, and Martian soil together; no one result answered the whole question. Tari's sister had trained for this launch for ten years and was waiting at the pad.
The mission window closed at sunrise. Tari could sign the clean-room release and let the rover carry the sample container to the launch vehicle, or hold the whole stack for another round of decontamination. Her supervisor pointed to the bacteria report, which was clear. Tari pointed to the fungus plate. She placed the launch seal back in its case. Behind the cleanroom window, the colony's dark rim had spread past the mark on its plate.
What’s real
- A. calidoustus spores were isolated from spacecraft cleanrooms.
- They survived several simulated Mars and space conditions.
- Extreme cold combined with high radiation was lethal.
What’s invented
- Tari, her sister, and the Mars launch are fictional.
- The colony plate and launch decision are invented.
- The paper does not show fungal survival on Mars.
Part two: Launch Seal
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