NASA’s CAPSTONE 02 Will Test Moon-Orbit Navigation

NASA has awarded Advanced Space a contract to lead CAPSTONE 02, a two-spacecraft technology demonstration targeted for launch in 2027. The mission will test how spacecraft find, approach and coordinate with one another in lunar orbit—capabilities NASA says could inform future Artemis missions and other activity near the Moon.

NASA has not announced a specific launch date. CAPSTONE 02 is a planned technology test, not a crewed Artemis flight, a lunar-base mission or an operational communications network.

What NASA is buying

Advanced Space will lead the mission under NASA’s contract, while Terran Orbital will provide two identical spacecraft weighing approximately 400 kilograms each. NASA’s Ames Research Center in California will manage the mission through the agency’s Small Spacecraft & Distributed Systems program.

The mission is built around coordinated operations between two vehicles rather than a single spacecraft operating alone. That matters because future lunar missions may require spacecraft to locate and approach landers, coordinate in cislunar space and potentially support crew or cargo transfers. NASA describes CAPSTONE 02 as a risk-reduction demonstration for those kinds of operations, not as proof that they are ready for routine use.

What the two spacecraft will test

The spacecraft will practice autonomous relative navigation, rendezvous and proximity operations, and formation flying or loitering. In practical terms, each vehicle will need to determine where it is relative to the other and maneuver safely while both operate in the complicated gravitational environment around the Moon.

NASA also plans to test cislunar communications and continue characterizing the lunar radiation environment. The navigation work will use ground-tracking measurements, optical sensors and observations of celestial bodies. An optical-imaging payload from Lawrence Livermore National Laboratory will support the navigation demonstration and collect images of the Moon.

The tests are designed for lunar orbit, where the combined gravitational effects of Earth and the Moon shape spacecraft trajectories. Engineers often call this a three-body problem. The result is a navigation environment that cannot be fully recreated in ground testing, so the systems must be evaluated in space.

How CAPSTONE 02 differs from the original mission

The new mission follows NASA’s original CAPSTONE spacecraft, which validated a near-rectilinear halo orbit and demonstrated related communications, networking and autonomous-navigation capabilities. NASA said the original spacecraft completed its extended mission testing in June 2026.

CAPSTONE 02 shifts the emphasis toward coordinated two-spacecraft operations. Instead of primarily validating an orbit and associated systems with one vehicle, the follow-on mission will examine how spacecraft can navigate relative to one another and perform close-proximity activities near the Moon.

Why it matters for Artemis

NASA says the demonstrations could inform future approaches to lunar landers, crew transfers in cislunar space, lunar infrastructure and commercial services. Those are intended applications, not completed results. CAPSTONE 02 must be built, launched and operated in space before NASA can determine how well the systems perform and whether the data can be applied to later missions.

The mission also is not a decision on Artemis timing. Its role is narrower: to generate flight data on navigation, communications and spacecraft coordination that planners may use in a larger lunar-exploration architecture.

What happens next

The next checkpoints are spacecraft development, mission-design updates and launch planning. NASA has not provided a specific launch provider, launch site or launch date in the cited mission materials.

For now, the significance is practical rather than operational. NASA is funding a two-spacecraft test of how vehicles can find, approach and work with each other near the Moon. The results could help engineers decide how later lunar missions should coordinate spacecraft in a region where Earth-based assumptions do not fully apply.

Sources

• NASA: New Spacecraft Technology Demonstration Mission at the Moon
• Space.com: Two probes will test three-body orbits