Helios-A and Helios-B (also known as Helios 1 and Helios 2), are a pair of probes launched into heliocentric orbit for the purpose of studying solar processes. A joint venture of the Federal Republic of Germany (West Germany) and NASA, the probes were launched from the John F. Kennedy Space Center at Cape Canaveral, Florida, on Dec. 10, 1974, and Jan. 15, 1976, respectively.
Latest from Copernical Team
- Dry immersion infographic
- A new chapter for ESA’s brand
- ExoMars rover targets vast bed of clay in search for life
- ESA joins agreement to strengthen global geodesy supply chain
- Smile: cleanroom to space
- Webb sniffs methane from interstellar Comet 3I/ATLAS
- Space science for your heart
- This Month at ESA: May 2026
- Week in images: 25-29 May 2026
- ESA and EDF strengthen their partnership for energy efficiency at Europe’s Spaceport













