Pluto
Mission scientists conclude that nitrogen, carbon monoxide and methane ices can flow across Pluto at its extremely low temperatures.
Historical biography archive · Updated 2026-11-03
William McKinnon Biography and Timeline
Follow William McKinnon through 3 dated historical records for United States of America.
William McKinnon, historical timeline
A chronological timeline drawn from matching World History Database records.
3Distinct records
1 of 1Page
2015–2020Years on this page
2015
2016
Sputnik Planitia
Models using New Horizons data show that Sputnik Planitia's nitrogen ice is renewed by slow convection, producing polygonal surface cells.
2020
Arrokoth Gentle Formation
McKinnon and colleagues conclude that Arrokoth's lobes likely joined in a slow, gentle merger during early Solar System formation.
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.