Tardigrades, colloquially known as water bears, can survive the lethal vacuum of space, extreme radiation, and temperatures near absolute zero by entering a state of suspended animation called cryptobiosis.

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Tardigrades, colloquially known as water bears, can survive the lethal vacuum of space, extreme radiation, and temperatures near absolute zero by entering a state of suspended animation called cryptobiosis. Microbiologists have literally frozen them, boiled them, crushed them, and shot them out of guns, only for these microscopic titans to casually rehydrate and walk away like nothing happened. They look like eight-legged vacuum cleaner bags and possess the resilience of a mythological deity. It is highly probable that long after humanity has nuked itself into oblivion and the sun expands to swallow the Earth, a desiccated water bear will still be floating through the cosmic void waiting for a drop of moisture