The stuff of life on Mercury
![](https://www.antarcticajournal.com/wp-content/uploads/2015/02/mercury-860x280.jpg)
Mercury, the closest planet to the sun, has blistering 800-degree temperatures at its equator—but its poles are full of ice. New data from NASA’s Messenger spacecraft, which began orbiting Mercury last year, has revealed that as much as a trillion tons of ice exists in shadowy polar craters, where temperatures can drop to minus 370 degrees. Much of the ice […]
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