Tags: Spacecraft.
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 Cape Canaveral Florida on Dec. 10 1974 and Jan. 15 1976 respectively.The probes are notable for having set a maximum speed record among spacecraft at 252792 km/h (157078 mi/h or 43.63 mi/s or 70.22 km/s or 0.000234c).
