異星人[iseijin] alien (from another planet)
一つ星[hitotsuboshi] evening star
１等星[ittousei] first-magnitude star
衛星[eisei] satellite
衛星地球局[eiseichikyuukyoku] (satellite) earth station

衛星放送[eiseihousou] satellite broadcasting
火星[kasei] Mars (planet)
火星人[kaseijin] Martian
海王星[kaiousei] Neptune (planet)
巨星[kyosei] giant star

矮躯[waiku] small stature
矮鶏[chabo] (Japanese) bantam
矮小[waishou] diminutive
矮人[waijin] dwarf
矮星[waisei] dwarf star

矮樹[waiju] low or short tree
矮惑星[waiwakusei] dwarf planet (e.g. Pluto)
白色矮星[hakushokuwaisei] white dwarf (star)
赤色矮星[sekishokuwaisei] red dwarf (star)
褐色矮星[kasshokuwaisei] brown dwarf (star)