Pluto
Infrared photometry provides evidence that methane frost is a dominant reflective material on Pluto's surface.
Historical biography archive · Updated 2026-11-03
Dale Cruikshank Biography and Timeline
Follow Dale Cruikshank through 3 dated historical records for United States of America.
Dale Cruikshank, historical timeline
A chronological timeline drawn from matching World History Database records.
3Distinct records
1 of 1Page
1976–1989Years on this page
1976
Pluto
Methane-frost observations imply Pluto has a comparatively high albedo and a diameter smaller than earlier estimates.
1989
Triton Methane Ice
Spectroscopic interpretation supports the presence of methane ice on Triton's surface during the Voyager encounter.
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.