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RIP

Russian space geckos didn't survive their journey

Rest in peace, little guys.

Russia's infamous space geckos, which were sent into space to test the effects of weightlessness on copulation, didn't survive the trip home. Russia's space agency confirmed Monday that the satellite, the Foton-M4 capsule, had landed, but all five of the geckos had died. Drosophila flies were also sent on the flight, and they have apparently survived.

"It was established that while the Drosophila flies handled spaceflight well, developed and bred successfully, all the geckos, unfortunately, died," Russia's space agency said in a statement. "The date and circumstances of their deaths will be established by specialists." Russia's Interfax suggests the geckos caught hypothermia and froze to death.