Helios 1 Solar Wind Mission Launch
Begins solar-wind investigations with the Helios programme after Helios 1 launches on a close solar orbit carrying plasma and magnetic-field instruments.
Historical biography archive · Updated 2026-11-03
Rainer Schwenn Biography and Timeline
Follow Rainer Schwenn through 4 dated historical records for Germany.
Rainer Schwenn, historical timeline
A chronological timeline drawn from matching World History Database records.
4Distinct records
1 of 1Page
1974–1976Years on this page
1974
1975
Helios 1 First Solar Perihelion
Uses Helios 1 observations from its first record-setting close approach to investigate solar-wind plasma much nearer the Sun than previous spacecraft.
1976
Helios 2 Solar Wind Mission Launch
Continues close-range investigation of solar-wind plasma after Helios 2 launches into an orbit extending well inside the orbit of Mercury.
Helios 2 Inner Heliosphere Measurements
Analyzes Helios 2 plasma measurements obtained closer to the Sun than Helios 1, improving knowledge of how solar-wind speed, density and temperature evolve with distance.
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.