Agency · International

International partnership

Missions credited collectively to international partnerships, where no single lead organization dominates the record.

Country / entity: International
Founded: —
Missions in record: 7
First flight here: 1984
Most recent: 2026

Mission timeline

7 missions · chronological

1984

Soviet Vega 1
Success

Soviet Union / international · Venus / Halley · Planetary probe / balloon

Venus lander-balloon and Halley flyby mission.
1984

Soviet Vega 2
Success

Soviet Union / international · Venus / Halley · Planetary probe / balloon

Companion Venus and Halley mission.
1998

Zarya / International Space Station assembly begins
Success

International partnership · Earth orbit · Space station

First ISS module; start of a continuously inhabited international laboratory.
2008

Fermi Gamma-ray Space Telescope
Success

United States / international · Earth orbit · Gamma-ray astronomy

High-energy gamma-ray observatory.
2015

LIGO first gravitational-wave detection
Success

International · Earth-based observatory · Astronomy milestone

Opened gravitational-wave astronomy (included as a cross-disciplinary space-science milestone).
2022

Artemis I
Success

United States / international · Moon · Lunar test flight

Uncrewed Orion mission completed a lunar-orbit test for the Artemis programme.
2026

Artemis II
Success

United States / international · Moon · Human spaceflight

Crewed lunar flyby; first people around the lunar far side since Apollo.