By Kantaro Komiya
TOKYO, March 5 (Reuters) – Japan’s Space One said its Kairos rocket terminated its flight after lift-off on Thursday, failing to achieve the country’s first entirely commercial satellite launch on its third attempt in a row.
The setback dealt a fresh blow to Japan’s efforts to establish a domestic launch industry and reduce its reliance on foreign rockets amid rising space-security needs to counter China.
Kairos “terminated the flight after judging that the achievement of its mission would be difficult,” the company said in a statement.
The 18-metre (59 ft) solid-propellant small rocket carried five experimental satellites, including from Tokyo-based ArkEdge Space and the Taiwan Space Agency.
Space One, the joint venture backed by optical electronics maker Canon, aerospace giant IHI and other Japanese conglomerates, previously launched two Kairos rockets from its Pacific coast site in 2024 but neither could successfully deploy payloads.
Live footage showed Kairos flying on a wobbly trajectory within two minutes after blasting off from the company’s private launch pad, which Shimizu, one of Space One’s first shareholders, built on the tip of the Kii peninsula in western Japan in 2021.
Space One is investigating the situation and will host a press conference on Thursday afternoon, it said.
Japan has a dearth of homemade launch vehicles despite expanding defence needs and business opportunities for domestic satellite makers. The country successfully launched only three rockets in 2025, lagging the U.S., China, Russia, France and India, according to the government. Japan aims to boost the annual launch cadence to 30 by the early 2030s.
In December, a launch failure of the state-funded H3 rocket, built by Mitsubishi Heavy Industries, further disrupted the pipeline, spurring satellite firms to tap reliable and affordable U.S. options, mostly Elon Musk’s industry-leading SpaceX and Rocket Lab, which has a launch site in New Zealand.
To ease the bottleneck, the government has granted million-dollar subsidies to nascent commercial rocketeers at home, including Space One and ISC. The defence ministry has signed hefty contracts with startups to build a constellation of national security satellites. But no Japanese rocket company has achieved a satellite launch.
Also doubling down on rockets in Japan are carmakers, to establish a space infrastructure that is not reliant on Musk and to repurpose its combustion engine industry amid electrification. Last year, Toyota invested in Interstellar Technologies, the first Japanese company that reached outer space in 2019, while Honda conducted a surprise reusable launch vehicle experiment.
(Reporting by Kantaro KomiyaEditing by Chang-Ran Kim)
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