I te 1 o Oketopa 2003, i whakakotahihia nga whakahaere e toru ki te hanga i te JAXA hou: Japan's Institute of Space and Astronautical Science (ISAS), te National Aerospace Laboratory of Japan (NAL), me te National Space Development Agency of Japan (NASDA). I hangaia a JAXA hei Whare Whakahaere Motuhake e whakahaeretia ana e te Manatū Mātauranga, Ahurea, Hakinakina, Pūtaiao me te Hangarau (MEXT) me te Manatū mo nga Take o Roto me te Whakawhitiwhiti (MIC). I mua i te whakakotahitanga, ko ISAS te kawenga mo te waahi me te rangahau aorangi, i te mea i arotahi a NAL ki te rangahau rererangi. NASDA, i whakatuhia i te 1 o Oketopa 1969, i whakawhanakehia nga toka, nga amiorangi, me te hanga hoki i te Japanese Experiment Module tawhito. Ko te tari matua o NASDA i te waahi o te Tanegashima Space Center, 115 kiromita ki te tonga o Tanegashima Island, te National Aerospace Laboratory of Japan (NAL
1 o Oketopa 2003