Pluto Atmosphere
Backlit New Horizons images reveal multiple atmospheric haze layers extending far above Pluto.
Historical biography archive · Updated 2026-11-03
Michael Summers Biography and Timeline
Follow Michael Summers through 2 dated historical records for United States of America.
Michael Summers, historical timeline
A chronological timeline drawn from matching World History Database records.
2Distinct records
1 of 1Page
2015–2015Years on this page
2015
Pluto Atmosphere
New Horizons detects ethylene and acetylene in Pluto's atmosphere, compounds involved in forming its complex haze particles.
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.