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Helios 1

Helios 1 was a joint West German-American solar probe that measured the solar wind, fields, energetic particles, cosmic dust, and interplanetary conditions from an orbit extending much closer to the Sun than Earth's.

Helios 1
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Identity

Aliases
Helios-AHelios A1974-097A
Name
Helios 1
Status
completed

Details

Astronauts
-
Description
Helios 1 was a joint West German-American solar probe that measured the solar wind, fields, energetic particles, cosmic dust, and interplanetary conditions from an orbit extending much closer to the Sun than Earth's.
Destination
Heliocentric orbit extending from Earth’s orbit to approximately 0.3 AU from the Sun for measuring the solar wind, magnetic and electric fields, cosmic rays, cosmic dust, and interplanetary conditions
Launch Site
Outcome
Successfully operated in heliocentric orbit, set a new close-approach record in 1975, and returned scientific data until late 1982.
Programs
Start Date
1974-12-10
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Assets & Meta

Creation Time
July 18, 2026 at 12:11:01 UTC
Updated Time
August 22, 2026 at 15:24:43 UTC

Other

Affiliations
Search Name
Helios 1 Helios-A Helios A 1974-097A
Space Stations
-
Vehicles