Please answer the following question: Luna 18 (Ye-8-5 series) was an unmanned space mission of the Luna program also called Lunik 18.[citation needed]Luna 18 was placed in an earth parking orbit after it was launched and was then sent towards the Moon. On 7 September 1971 it entered lunar orbit. The spacecraft completed 85 communications sessions and 54 lunar orbits before it was sent towards the lunar surface by use of braking rockets. 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