October 20–21, H3 • HTV-X

October 20–21, H3 • HTV-X

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H3 • HTV-X: Watch the Launch with Centauri Circle

Date: October 20–21, 2025

Japan is preparing for a milestone in spaceflight. An H3 launch vehicle, developed by Mitsubishi Heavy Industries in partnership with JAXA (Japan Aerospace Exploration Agency), will launch the first HTV-X cargo resupply vehicle to the International Space Station. This mission represents the next generation of Japan’s ISS support program, building on the legacy of the original HTV series.

Mission Highlights

  • Rocket: H3 Launch Vehicle

  • Payload: HTV-X (first flight)

  • Launch Site: Yoshinobu Launch Complex, JAXA Tanegashima Space Center, Japan

  • Launch Time: 10:58 a.m. JST, Oct. 21 | 0158 UTC, Oct. 21 | 9:58 p.m. EDT, Oct. 20

Centauri Circle Meetup: Launch Watch

Location: TBD
Time: 9:58 p.m. EDT on Oct. 20 | 0158 UTC on Oct. 21