Japan's Space One Kairos rocket explodes on inaugural flight

Japan's Space One's small, solid-fueled Kairos rocket exploded shortly after launch on its inaugural trip on Wednesday as the firm tried to become the first Japanese company to put a satellite in orbit.

The 18-metre (59 ft), four-stage solid-fuel rocket exploded seconds after lifting off just after 11:01 a.m. (0201 GMT), leaving behind a large loud of smoke, a fire, fragments of the rocket and firefighting water sprays near the launch pad, visible on local media livestreams of the launch on the tip of mountainous Kii peninsula in western Japan.

Space One said the flight was "interrupted" after the launch and was investigating the situation. There was no immediate indication of what caused the explosion, or whether there were any injuries. Pads typically have no people anywhere nearby during a launch. Space One has said the launch is highly automated and requires roughly a dozen staff at the ground control center.

Kairos carried an experimental government satellite that can temporarily replace intelligence satellites in orbit if they fall offline.

Space One had planned the launch for Saturday but postponed it after a ship entered the nearby restricted sea area.

Although Japan is a relatively small player in the space race, the nation's rocket developers are scrambling to build cheaper vehicles to capture booming demand for satellite launches from its government and from global clients.

Tokyo-based Space One was established in 2018 by a consortium of Japanese companies: Canon Electronics, the aerospace engineering unit of IHI, construction firm Shimizu and the state-backed Development Bank of Japan. Two of Japan's biggest banks, Mitsubishi UFJ and Mizuho, also own minority stakes.

Shares in Canon Electronics fell more than 9%