space astronomy
astronomy that involves the study of celestial objects and phenomena for the use of telescopes and instruments in outer space
en-GB/ˈspeɪs əˈstɹɒnəmɪ/
en-US/ˈspeɪs əˈstɹɑnəmi/
astronomy that involves the study of celestial objects and phenomena for the use of telescopes and instruments in outer space