Mercury Polar Ice
MESSENGER neutron measurements provide compelling evidence that Mercury's permanently shadowed north-polar craters contain abundant water ice.
Historical biography archive · Updated 2026-11-03
David Lawrence Biography and Timeline
Follow David Lawrence through 2 dated historical records for United States of America.
David Lawrence, historical timeline
A chronological timeline drawn from matching World History Database records.
2Distinct records
1 of 1Page
2012–2012Years on this page
2012
Mercury Polar Volatiles
Lawrence reports that hydrogen-rich polar deposits measured by MESSENGER are consistent with thick accumulations of water ice.
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.