Martin Slade8 August 1991
Goldstone and Very Large Array radar observations reveal an unusually bright region near Mercury's north pole consistent with water ice.
United States of America · Science / Astronomy. Chronological records rendered directly from the World History Database.
Goldstone and Very Large Array radar observations reveal an unusually bright region near Mercury's north pole consistent with water ice.
Muhleman participates in radar mapping that detects highly reflective material near Mercury's north pole, providing evidence for polar ice.
Butler helps analyse radar observations showing a bright north-polar deposit on Mercury with properties characteristic of icy surfaces.
Arecibo observations confirm a strong polar radar signature on Mercury that supports the interpretation of ice in permanently shadowed craters.
MESSENGER neutron measurements provide compelling evidence that Mercury's permanently shadowed north-polar craters contain abundant water ice.
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