converter Space objects, terms and missions en false false apollo The American moon program false false asteroid Small planetary body in orbit around the Sun false false astronaut Person from the USA who travels into space false false buran Russian reusable spacecraft program false false comet Medium-sized icy object orbiting the Sun false false constellation Grouping of stars which can form a shape or pattern false false cosmonaut Person from Russia who travels into space false false earth The planet on which we live false false eclipse When one celestial body obscures another false false galaxy Very large cluster of stars false false jupiter Fifth from the Sun, the largest planet false false mars Fourth planet from the Sun false false mercury The smallest planet and nearest the Sun false false meteor Meteoroid that burns up in the Earth's atmosphere false false meteorite Matter that has reached Earth from outer space false false mir Russian space station, launched in 1986 false false moon The natural satellite of the Earth false false neptune Giant planet, eighth from the sun false false orbit Path an object makes around another false false pluto Second-largest known dwarf planet false false satellite An object that revolves around a planet false false saturn Giant planet with rings, sixth from the Sun false false skylab The first American space station, launched in 1973 false false sputnik The first artificial Earth satellite, launched in 1957 false false sun The star at the center of the Solar System false false taikonaut Person from China who travels into space false false uranus Seventh planet from the Sun false false venus Second planet from the Sun false false voyager Twin space probes launched in 1977