The Japan Geoscience Union (JpGU) commemorates the coming year 2020; it is the 15th anniversary since JpGU was founded in 2005, and the 30th anniversary since its predecessor, the Japan Earth and Planetary Science Joint Meeting, was first held in 1990. On this occasion, the 2020 annual meeting will be held joint with the American Geophysical Union (AGU) as the JpGU-AGU Joint Meeting 2020, following the first cooperative effort with AGU in 2017. Furthermore, the Joint Meeting anticipates expansion and enrichment of joint sessions with the Asia Oceania Geosciences Society (AOGS) and the European Geosciences Union (EGU). The JpGU has recently grown to embrace over 51 members of academic societies and over 10,000 individual members. The attendance at the 2019 Annual Meeting exceeded 8,400 total participants (including approximately 2,400 students), with over 650 participants from abroad (covering 41 nations and areas). The meeting provides an indispensable opportunity for participants from the fields of Earth and planetary science to interact. The annual survey indicates that the participants would like to see a wider range of session programs, including some open to the public, and an expansion of English-language sessions. Hopes are high for the promotion and expansion of interdisciplinary and border-area researches and further internationalization of Earth and planetary science research. Abstract submission deadline: February 18, 2020.