Answer the following question: Zond 5 a formal member of the Soviet Zond program and unmanned version of Soyuz 7K-L1 manned moon-flyby spacecraft was launched by a Proton-K carrier rocket with a Blok D upper stage to conduct scientific studies[citation needed] during a lunar flyby and to return to Earth.Zond-5 became the first spacecraft to circle the Moon and return to land on Earth. On September 18 1968 the spacecraft flew around the Moon. The closest distance was 1950 km. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Mean Of Transportation