On February 21 (Sat.) and 22 (Sun.), 2026, we held an astronomy training for students from Ena High School in Gifu Prefecture. They estimated the distance to galaxies from photographs of galaxies and used the recession speeds of these galaxies to determine the age of the universe.

On January 31 (Sat.) and February 1 (Sun.), 2026, we held an astronomy training for students from Matsusho-Gakuen High School and Suwa-Seiryo High School in Nagano Prefecture and Nirasaki High School in Yamanashi Prefecture. They estimated the distance to galaxies from photographs of galaxies and used the recession speeds of these galaxies to determine the age of the universe.

On August 2 (Sat.) and 3 (Sun.), 2025, we held an astronomy training for students from Matsumoto-Arigasaki High School and Matsumoto-Fukashi High School in Nagano Prefecture. They estimated the distance to galaxies from photographs of galaxies and used the recession speeds of these galaxies to determine the age of the universe.

On February 22 (Sat.) and 23 (Sun.), 2025, we held an astronomy training for students from Ena High School and Tajimi-Kita High School in Gifu Prefecture. They estimated the distance to galaxies from photographs of galaxies and used the recession speeds of these galaxies to determine the age of the universe.

On January 25 (Sat.) and 26 (Sun.), 2025, we held an astronomy training for students from Suwa-Seiryo High School and Matsusho-Gakuen High School and Matsumoto-Agatagaoka High School in Nagano Prefecture. They estimated the distance to galaxies from photographs of galaxies and used the recession speeds of these galaxies to determine the age of the universe.

In commemoration of the 100th anniversary of planetariums, samples from asteroids Itokawa and Ryugu, brought back by the Japanese asteroid probes Hayabusa and Hayabusa2, are simultaneously exhibited in a nationwide tour. The relay tour will continue until May 2025 through the cooperation of member museums of the Japan Planetarium Association.

Organizers: Planetarium 100th Anniversary Commemorative Project Executive Committee, Astromaterials Science Research Group (ASRG ISAS/JAXA)
Co-organizers: UTokyo Organization for Planetary Space Science (UTOPS), Nagoya City Science Museum

For details, please refer to the following URL.

https://100.planetarium.jp/?page_id=4591