On Sunday, October 26, 2025, Japan’s space agency successfully launched its new flagship H3 rocket, which is carrying an unmanned cargo spacecraft on its first mission to deliver supplies to the International Space Station (ISS).

The Japan Aerospace Exploration Agency announced that the HTV-X1 spacecraft lifted off successfully from the No. 7 H3 rocket at Japan’s Tanegashima Space Center located in southern Japan.

According to JAXA, the spacecraft was separated and placed into its intended orbit. If all goes well, it should reach the ISS in a few days to deliver supplies.

Japanese astronaut Kimiya Yui, who is currently aboard the ISS, is scheduled to catch the craft using a robot arm early Thursday morning(October 24,2025).

The H3 (7th) rocket, developed by the Japan Aerospace Exploration Agency (JAXA), launched from the Tanegashima Space Center in Minamitane, Tanegashima island, on October 26, 2025.

HTV-X

The HTV-X is the successor to JAXA’s unmanned H-II Transfer Vehicle, known as Kounotori, which means stork in Japanese.

This vehicle completed nine missions to the ISS between 2009 and 2020.

The new freighter has the capacity to carry a larger payload and can supply power during flight, allowing for the transport of cells and other lab samples that need to be stored at low temperatures.

The HTV-X is built to connect with the ISS for up to six months.

It delivers supplies and takes back waste, and then it can carry out technical missions while orbiting for three months after leaving the station.

The H3 rocket takes over from Japan’s cherished H-2A rocket, which had its last flight in June, as the new flagship model aimed at being more cost-effective in the global space market.

The H3 has successfully completed six flights in a row after a failed debut in 2023, when the rocket had to be destroyed along with its payload.

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