There would seem to be few more unlikely places in the universe to find water ice than the sizzling surface of Mercury. Now, however, some scientists are beginning to make that case.
Astronomers have had radar readings for years consistent with water ice existing around Mercury''s north pole. Recent images from NASA's Messenger probe in orbit around Mercury show the areas identified by radar are in fact permanently shadowed, thus shielded from the Sun's heat.
The case is not clinched yet, but once again Nature is forcing us to consider a completely counterintuitive reality.
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