Japan's new H3 rocket took off Friday on its second test flight; its success is an important milestone for the launch vehicle poised to power nearly all of the Japanese space program's missions into orbit over the next decade.
After releasing the first stage to fall into the Pacific, the H3's second stage lit a single LE-5B engine, also burning liquid hydrogen and liquid oxygen, for an 11-minute burn to accelerate the rocket to orbital velocity.
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