In such a big project of the earth planetary science, it would be an inevitable process to organize an international cooperation framework. Especially in Japan, we have been working together in various fields with NASA, the pioneer in the field.
Initiated by the Halley's Comet exploration program in the Cold War era under the framework called IACG (Inter-Agency Consultative Group for Space Science), international collaboration is crucial for planetary science in Japan.
There are several ongoing US-Japan collaborations and this time we would like to focus on two satellites, namely GEOTAIL and HINODE. The former one was the 1st satellite of the International Solar Terrestrial Physics program (ISTP) armada and was launched in 1992. The satellite is still active and all the Japan and US instruments onboard are sending in-situ plasma data in the magnetosphere. HINODE is the space solar observatory and was launched in 2006. Solar Optical Telescope (SOT) and X-ray Telescope (XRT) were made fully/partially in the US.
In the earth environmental observation, along with the joint missions where JAXA observation instruments load on the NASA satellites, and visa-versa, most recently, there has been a cooperation where JAXA GCOM-W satellite joined in the NASA A-train. In the next fiscal year, Global Precipitation Measurement (GPM), which is an equal-partner project, will be launched. Regarding the world-leading international project that are using the most of the respective specialities in the field and technology from Japan and America, we aim to deepen our understanding to the meaning of the global cooperation itself and to the future prospect, by gathering in this union conference and holding a session.