Ma ʻApelila 10, 1974, ua hoʻokuʻu ʻia ka satellite S73-7 i kahi orbit 800-kilomita ma ke ʻano he ʻāpana o ka papahana hoʻāʻo lewa a ka US Air Force. ʻO ka satellite 66-cm-diameter kahi ʻāpana o ka mea i kapa ʻia ʻo "Hexagon System," i hoʻokuʻu ʻia mai ka satellite KH-9 nui aʻe, a ua manaʻo ʻia e hoʻonui i ka orbit a lawelawe ma ke ʻano he infrared calibration target no nā lako ʻike mamao. ʻAʻole i kūleʻa ka misionari, a ua nalowale ka satellite a ʻike hou ʻia ma ʻApelila 2024 wale nō. ʻO KH-9 ka mea lawe i nā satelite target calibration S73. Puna kiʻi: National Reconnaissance Office
Source: 3dnews.ru