In 2005, NASA flew five thick-toed geckos aboard Foton-M2 for 16 days without food or water; all were recovered with no apparent negative health effects

In 2005, NASA and Russia’s Foton-M2 mission took five thick-toed geckos on a 16-day journey in microgravity without food or water, revealing surprising insights into how weightlessness affects living organisms.

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