NASA, Partners Accelerate Lander Development for 2028 Moon Missions

NASA has changed both the mission design and operating plans for early Artemis landings. Artemis III will now demonstrate docking between test landers from Blue Origin and SpaceX and NASA’s Orion spacecraft in low Earth orbit. NASA is also changing where Orion meets the landers on future missions.

Instead of using a near-rectilinear halo orbit around the Moon, each lander will meet Orion in an orbit suited to its own system. SpaceX’s Starship will rendezvous with Orion in Earth orbit, then push the combined spacecraft toward the Moon. Blue Origin’s lander will use transfer stages before reaching an elliptical polar lunar orbit.

These changes are intended to reduce development time and support a 2028 landing. NASA still requires uncrewed demonstrations and safety certification before crewed missions. The agency is developing both crew and cargo lander versions while keeping SLS and Orion as the crew-launch foundation.

A human landing system is a crew-rated spacecraft designed to transport astronauts between lunar orbit and the Moon’s surface. In these Artemis plans, commercial providers build the landers, while NASA supplies Orion and the SLS rocket for the crew’s launch from Florida. The lander is the vehicle that performs the lunar landing and ascent.

During a mission, four astronauts launch inside Orion. Orion meets a commercial lander, and two astronauts move into that lander. The lander carries them to the lunar surface for several days, then returns them to Orion. The other two astronauts remain aboard Orion throughout the surface expedition.

The arrangement divides the mission between NASA and commercial systems. NASA will certify each lander before crewed use, following an uncrewed demonstration. SpaceX and Blue Origin are developing landers for near-term Artemis missions, including crew and cargo versions.

Each early Artemis lunar landing mission carries four astronauts toward the Moon in Orion. Two astronauts descend to the lunar surface using a commercial human landing system. The other two remain aboard Orion instead of joining the surface expedition.

The lander therefore acts as a shuttle between Orion and the Moon. After docking, two crew members enter the lander and travel down for several days. In the SpaceX plan, Starship later brings those astronauts back to Orion. The article describes the same overall division for the initial crewed missions, though Blue Origin’s detailed return sequence is not fully provided.

This crew arrangement keeps Orion involved as the spacecraft that carries the astronauts from Earth and back. It also limits the number of people who need to use the lander during the surface phase. NASA will require uncrewed demonstrations and certification before these crewed missions.

Changing the rendezvous orbit alters how much fuel the landers need and how quickly crews can move between the surface and Orion. NASA says the new arrangements are informed by each provider’s spacecraft rather than forcing both systems into the same near-rectilinear halo orbit.

For SpaceX, Starship docks with Orion in low Earth orbit and then performs the trans-lunar injection burn. The combined stack reaches low lunar orbit directly. NASA says this lowers the amount of propellant Starship must aggregate in space and can reduce the time astronauts need to link back up with Orion after leaving the Moon.

Blue Origin’s accelerated plan uses an elliptical polar lunar orbit instead of the previously planned halo orbit. NASA says that orbit offers faster returns from the lunar surface to Orion. The tradeoff is that each provider follows a different operational path, requiring separate demonstrations and certification before crewed missions.

SpaceX and Blue Origin are using different transportation architectures. SpaceX’s Starship Human Landing System relies on many Starship launches and in-space propellant transfer. Blue Origin’s accelerated Blue Moon Mark 2 Alpha plan defers propellant transfer and uses disposable transfer stages instead.

SpaceX launches tanker Starships to low Earth orbit. They fill a depot Starship, which later fuels the lander. The lander docks with Orion in Earth orbit, performs a trans-lunar injection burn, and carries two astronauts to the Moon. Blue Origin launches three transfer stages, followed by the Mark 2 lander. The stack heads toward an elliptical polar lunar orbit.

The two plans also use different lunar rendezvous orbits. SpaceX targets low lunar orbit, while Blue Origin targets an elliptical polar orbit. Both providers must first fly uncrewed demonstrations, and NASA must certify their systems before crewed Artemis missions.

SpaceX’s Starship design depends on collecting cryogenic propellant in low Earth orbit. This approach lets the company separate fueling from the crew launch and supports flexibility in when SLS sends Orion upward. It also enables the lander to depart Earth orbit after docking with Orion.

Several tanker Starships transfer super-cold liquid propellant to a depot Starship. The depot then fuels the waiting Starship lander. By contrast, Blue Origin will defer propellant transfer for its accelerated 2028 mission. Three transfer stages launch into low Earth orbit, meet the Blue Moon Mark 2 Alpha Lander, and successively propel it toward an elliptical polar lunar orbit.

The article presents these as provider-specific choices for accelerating development. SpaceX will demonstrate propellant aggregation during its uncrewed demonstration mission. Blue Origin’s plan is based on existing Mark 1 and Mark 2 hardware. Both systems still require uncrewed demonstrations and NASA certification before carrying crews.

A trans-lunar injection burn is a planned rocket-engine firing that changes a spacecraft’s orbit around Earth into a trajectory reaching the Moon. The article identifies this burn as the step that sends the docked Starship lander and Orion stack from Earth orbit toward low lunar orbit. This explanation uses standard orbital mechanics beyond the article’s brief description.

Before the burn, Starship HLS waits for Orion in low Earth orbit. After they rendezvous and dock, Starship fires its engines. The burn increases and redirects the combined stack’s orbital energy, placing it on a lunar-bound path. At the Moon, later engine maneuvers guide the spacecraft into low lunar orbit.

This method matters because the lander, rather than SLS or Orion, performs the departure burn in SpaceX’s revised concept. NASA says direct access to low lunar orbit reduces the propellant Starship must aggregate and can shorten the crew’s return connection to Orion. SpaceX will test the approach uncrewed.