Missions to Halley's Comet

retired ESA spacecraft which visited Comets Halley and Grigg-Skjellerup

USSR space program with the first balloon flight on Venus, in 1985

Japanese space probe

space probe

, known before launch as MS-T5, was Japan's first interplanetary spacecraft and the first deep space probe to be launched by any country other than the US or the Soviet Union. It aimed to demonstrate the performance of the new launch vehicle, test its ability to escape from Earth gravity, and observe the interplanetary medium and magnetic field. Sakigake also served as a reference probe for Halley's Comet. Early measurements would be used to improve the mission of the Suisei probe launched several months later.

space probe

space probes