Program archive

Helios

Helios is explored here through 2 archived missions, from Helios 1 through Helios 2, with the program’s spacecraft, people, milestones, and source-backed history connected along the way.

Missions: 2
People: 0
Vehicles: 2

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Helios spacecraft

2 mission-specific spacecraft and test articles, plus 0 launch systems and shared hardware records.

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Spin-stabilized close-Sun probeDecember 10, 1974

Helios 1 spacecraft

Helios 1 spacecraft was a West German-built cylindrical spacecraft protected by reflective surfaces and spun about once per second to distribute solar heating.

Spin-stabilized close-Sun probeJanuary 15, 1976

Helios 2 spacecraft

Helios 2 spacecraft was a West German-built cylindrical spacecraft protected by reflective surfaces and spun about once per second to distribute solar heating.