Pluto Atmosphere
During a solar occultation, New Horizons probes Pluto's atmosphere far above levels previously measured from Earth.
Historical biography archive · Updated 2026-11-03
Andrew Steffl Biography and Timeline
Follow Andrew Steffl through 2 dated historical records for United States of America.
Andrew Steffl, 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 data show Pluto's nitrogen-rich atmosphere extending to roughly 1,600 kilometres above the surface.
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.