Water. It’s found everywhere on Earth, from the polar ice caps to steamy geysers. And wherever water flows on this planet, you can be sure to find life.
“When we find water here on Earth — whether it be ice-covered lakes, whether it be deep-sea hydrothermal vents, whether it be arid deserts — if there’s any water, we’ve found microbes that have found a way to make a living there,” said Brian Glazer, an oceanographer at the University of Hawaii at Manoa, who has studied astrobiology.
No wondeer NASA’s motto in the hunt for extraterrestrial life has been “follow the water.”