Lunar Gateway

planned lunar international space station

Key facts

Crew: 4 maximum (planned)
Carrier rocket: Falcon Heavy , SLS Block 1B
Mission status: Cancelled
Mass: 63,000 kg (139,000 lb)
Length: 20 m (66 ft) (total)
Width: 19 m (62 ft) (total)
Height: 43 m (141 ft) (total)
Pressurised volume: ≥125 m (4,400 cu ft) (planned)
Periselene altitude: 3,000 km (1,900 mi)
Aposelene altitude: 70,000 km (43,000 mi)
Orbital inclination: Polar near-rectilinear halo orbit (NRHO)
Orbital period: ≈7 days

Article

The Lunar Gateway was a planned space station that would have been assembled in orbit around the Moon as part of the Artemis program. Derived from earlier concepts such as the Exploration Gateway Platform, it was developed from 2017 until 2026, when the leading space agency NASA shifted focus to developing a lunar surface base. The elements of Gateway are expected to be repurposed for other projects.

The project was developed with international partners including the European Space Agency (ESA), the Japan Aerospace Exploration Agency (JAXA), the Canadian Space Agency (CSA), and the Mohammed Bin Rashid Space Centre (MBRSC) of the United Arab Emirates.