Satellites orbiting the Sun

defunct NASA space telescope

NASA robotic space probe to probe the outer corona of the Sun

retired ESA spacecraft which visited Comets Halley and Grigg-Skjellerup

NASA space probe launched in 2005 to study comet Tempel 1

thirteenth mission of the Discovery program; multiple-flyby reconnaissance of five Jupiter trojans

space probe

Japanese 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.