Editorial

15:59 JST, July 1, 2025

Japan’s mainstay large H2A rocket was successfully launched for the model’s final flight, concluding its operations. The rocket, which was highly reliable, made a significant achievement as it played an important role that will go down in history as part of Japan’s space development.

The H2A was jointly developed by the Japan Aerospace Exploration Agency and Mitsubishi Heavy Industries Ltd. The first rocket was launched in 2001, and the 50th rocket was used in the latest launch. During this time, the only failure was the sixth launch in 2003, giving the H2A a success rate of 98%. It can be said that this figure is one of the highest for rocket launches.

There were only a few major delays in launches, which was another selling point of the H2A, since it was easy for........

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