JAXA - Japan Aerospace Exploration Agency
2003-present
Who
Formed in 2003 by merging three predecessors - ISAS (science rockets), NAL (aeronautics) and NASDA (operational rockets and the astronaut programme). That answers the standing question of why one Japanese body flies sounding rockets above the atmosphere and builds station modules below it: it inherited all three jobs.
Why it matters
Japan is the sample-return specialist, and the only nation to do it twice: Hayabusa brought grains from asteroid Itokawa in 2010 after an ion-engine return that outlived every plan; Hayabusa2 brought 5.4 g from asteroid Ryugu in December 2020. Both collections go out to laboratories worldwide on loan, by proposal. SLIM made the first Japanese soft landing on the Moon in January 2024 - a guided-precision demonstrator (about 100 m class against the usual few km) that arrived tilted nose-down and kept working. The H3 workhorse failed its first flight (March 2023) and succeeded on its second (February 2024). Kibo is the ISS's largest single-module laboratory and Japan's HTV cargo ships ran the station's logistics for a decade - and Japan's flights to space split honestly into two firsts: Toyohiro Akiyama, first Japanese citizen in space, on a Soyuz to Mir in December 1990; Mamoru Mohri, first astronaut of the official Japanese programme, on shuttle STS-47 in 1994. Status: September 2026.
Lineage
ISAS's pencil rockets, NASDA's licensed and then native launch vehicles, the Mercury-to-Mir astronaut exchanges. Part of the ISS web with NASA and ESA - Juice flies to Jupiter on an Ariane 5 with ESA-built MIRI in Webb.