8legs: Hokkaido university

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#1 out of 3

10h ago

Moss spores survived nine months in space under multiple conditions outside the ISS.
Over 80% of spores endured after return, with UV exposure reducing germination rates.
UV radiation was a more detrimental factor than visible or infrared light for germination.
A mathematical model suggests spores could survive roughly 15 years in space.
The work aims to advance future space agriculture on the Moon and Mars.
Researchers sent hundreds of sporophytes to the ISS on Cygnus NG-17 for exposure tests.
Three space conditions included dark, light with UV filter, and light without UV filter.
Sporophytes showed the most resilience among moss tissues tested.
The study was conducted by Tomomichi Fujita and colleagues at Hokkaido University.

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#2 out of 3

10h ago

Space-exposed moss spores largely survived 283 days in orbit and germinated after return.
The spores came from Physcomitrium patens and were tested against Earth-based controls.
Researchers suggest multiple spore walls provide passive shielding against space stresses.
Space-tested moss spore resilience informs theories about life's robustness beyond Earth.
The study used Space outside the ISS for 283 days before retrieval for germination testing.
Control spores on Earth showed a high baseline germination rate, about 97%.
The findings strengthen the idea that life’s building blocks may be widespread and persistent.
Experts note the key test is whether space-germinated moss can reproduce in space.
Researchers observed that other life stages of moss did not survive simulated space stresses.
The moss course is linked to broader questions about life’s origins and space habitability.

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#3 out of 3

10h ago

Space exposure shows moss spores are highly resilient to UV, cold, and heat compared with other tissues.
Spores germinated on Earth after a long space sojourn, with over 80% germination observed.
The moss Physcomitrium patens was studied to assess space tolerance among its tissues.
Researchers outside the ISS tested spores on a platform from March to December 2022.
Dormancy may help spores tolerate space conditions, prompting genetic investigations.
Space survival tests included UV exposure, freezing, and high temperatures to simulate harsh conditions.
The study aims to understand how terrestrial life could support human habitats beyond Earth.
Space biology expert Robert Ferl commented on the significance of finding terrestrial life in space.
Researchers plan to identify genes involved in spores’ space tolerance for UV-induced damage.
The study appears in iScience with collaboration from Hokkaido University and others.

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