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  • BBC World, @bbc_ciencia


image source, Thinkstock

All five lizards sent into space on a Russian satellite as part of a sexual experiment have died, according to Roscosmos, Russia’s space agency.

Roscosmos explained in a statement that the Foton-M4 probe returned to Earth this Monday.

As reported by Russian news agencies, experts say the reptiles may have frozen to death when the heating system failed.

They had been sent into space as part of a study on the effect of weightlessness on the sexual life and development of animals.