Japan’s H3 rocket is flying again. The H3 Launch Vehicle No. 6 left the Tanegashima Space Center in Kagoshima Prefecture on Friday at 9:53 a.m. local time (0053GMT), the Japan Aerospace Exploration Agency (JAXA) said, and reached its planned orbit about 16 minutes later. That completed the primary mission objectives.
The flight ended a pause of nearly six months.
The failure that grounded it
The launch was closely watched because of what happened in December 2025. That month, a malfunction on H3 No. 8 kept its satellite from reaching the intended orbit. JAXA and manufacturer Mitsubishi Heavy Industries halted launches while engineers hunted for the cause and put corrective measures in place. Friday was the rocket’s first mission since.
A cheaper configuration
The launch also debuted the H3-30, a lower-cost version that flies without side-mounted solid rocket boosters. The design is meant to bring down launch expenses and help Japan compete for commercial customers in a crowded market.
The H3 itself is Japan’s next-generation flagship vehicle, developed by JAXA and Mitsubishi Heavy Industries as the replacement for the H-IIA. It is intended to give government, scientific and commercial users cheaper and more flexible access to space.
