The 2,000-pound, 32-foot unmanned MOMO-2 rocket crashed just after 5:30 a.m. local time. No injuries were reported following the crash, which reportedly cost tens of millions of yen.
Developer Interstellar Technologies said in a Facebook post that its launch pad was burned in the explosion but that there was no other damage to its facilities. The company shared photos of its employees posing with the charred rocket.
If the launch had been successful, MOMO-2 would have been Japan's first privately developed rocket to reach outer space. Saturday's crash was the second such failed launch attempt in a year; the company attempted a launch last summer but lost contact with the rocket a minute into flight.
"We could not accomplish what we were expected to do. I feel sorry for that," Interstellar Technologies President Takahiro Inagawa was quoted as saying by the Japan Times.
Despite the two failed launches, Inagawa said he "would like to keep giving it a shot."