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Luckily for them, by the time that happens the tardigrades may well have hitched a ride into outer space and traveled well beyond the sun’s overheated grasp.

"Whether it's the future, or going into outer space, humans must live genuinely human lives," he said.

And, of course, to simulate the experience of viewing those waters from outer space.

A recent study in the journal Meteoritics and Planetary Science threw cold water on the idea — the microbes on Ryugu almost certainly came from Earth rather than outer space.

Before you decide to leave Earth behind and move to outer space, consider the life of an astronaut on the International Space Station.