A Planet of Fire and (Ice?)
At first glance, the solar system’s innermost planet generally conjures up images of a blistering hot, sun-baked ball of rock which would be one of the last places one would expect to find water ice. That was considered to be the case until 1991, when the Arecibo radar telescope in Puerto Rico, as well as NASA’s Goldstone/VLA detected reflections from Mercury which appeared to indicate the presence of water ice […]
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