Add-ons made by Jack Higgins 5535 Annefrank 9969 Braille Explorer 1 to 5 Genesis Helios 1 and 2 Infrared Space Observatory International Sun-Earth Explorer Luna 9 Luna 13 Luna 15 to 24 Mariner 2 Nozomi Pioneer 6 to 9 Sakigake Salyut 7 Shenzhou: 1999–2005 Spitzer Space Telescope Suisei Venera 9 to 14 Venera 15 and 16 Viking 1 and 2
