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Helios 2

Helios 2 was the second joint West German-American probe of the inner heliosphere. It carried improved systems and passed closer to the Sun than Helios 1 while measuring plasma, fields, energetic particles, cosmic dust, and comet tails.

Helios 2
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Identity

Aliases
Helios-BHelios B1976-003A
Name
Helios 2
Status
completed

Details

Astronauts
-
Description
Helios 2 was the second joint West German-American probe of the inner heliosphere. It carried improved systems and passed closer to the Sun than Helios 1 while measuring plasma, fields, energetic particles, cosmic dust, and comet tails.
End Date
1981-01-07
Launch Site
Outcome
Successfully reached a record 0.29 AU perihelion and returned solar-environment data until its downlink failed in 1980; controllers shut it down on January 7, 1981.
Programs
Start Date
1976-01-15
Vehicle Families

Links

Assets & Meta

Creation Time
July 18, 2026 at 12:22:52 UTC
Updated Time
July 29, 2026 at 10:52:23 UTC

Other

Affiliations
Search Name
Helios 2 Helios-B Helios B 1976-003A
Space Stations
-
Vehicles
Helios 2 - AeroVia