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Japan launches a climate change monitoring satellite on mainstay H2A rocket’s last flight

  • Japan launched the 50th and final flight of its H-2A rocket on Sunday from the Tanegashima Space Center, carrying the GOSAT-GW satellite to orbit.
  • The retirement followed several days' delay caused by malfunctioning electrical systems and was driven by the H-2A's high launch costs and replacement by the H3 rocket.
  • Since its debut in 2001, the H-2A has served as Japan's flagship launcher with a near-perfect 98% success rate and carried satellites for over two decades.
  • The GOSAT-GW satellite, nicknamed IBUKI GW, is designed to monitor greenhouse gases and the water cycle, continuing Japan's climate change observation efforts.
  • Mitsubishi Heavy Industries and JAXA are leading the shift to the more cost-competitive H3 rocket, already operational, along with developing a smaller Epsilon rocket for diverse satellite launch needs.
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Japan launches a climate change monitoring satellite on mainstay H2A ...

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Nikkei broke the news in Japan on Friday, June 27, 2025.
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