The moon landers that three commercial teams are developing to ferry astronauts to and from the lunar surface for NASA are a diverse bunch.
On Thursday (April 30), NASA announced that it had awarded contracts to three commercial teams, each of which will develop a human landing system for use by the space agency's Artemis program. Artemis aims to put two astronauts down near the moon's south pole in 2024 and establish a sustainable presence on and around Earth's natural satellite by the late 2020s.
SpaceX, Dynetics and a team led by Blue Origin will split a total pot of $967 million, which will fund 10 months of development work. NASA will then tab one or more of these teams to mature their systems. In the end, the space agency will procure crewed lunar transportation services from the options that are left on the table.
Related: NASA unveils plan for Artemis 'base camp' on the moon beyond 2024
The options are, at this early stage anyway, quite varied, for the commercial teams are taking very different approaches to their landers. SpaceX, for example, will continue developing its Starship deep-space transportation system, which Elon Musk's company envisions making Mars colonization and other bold exploration feats economically feasible.
SpaceX's Starship megarocket
The 165-foot-tall (50 meters) Starship will launch off Earth atop a giant rocket called Super Heavy. Both of these elements will be reusable; each Super Heavy will come back down for a vertical landing shortly after liftoff, and each Starship will fly many missions once it's aloft, Musk has said. (Starship needs Super Heavy only to get off our planet; the spacecraft will be powerful enough to launch itself off the surface of the moon or Mars.)
Starship will be capable of carrying up to 100 people at a time, Musk has said. NASA wouldn't come close to filling the possible seats on each Artemis flight — the 2024 landing mission, for example, will carry just two astronauts — but the agency would doubtless find a use for all of the vehicle's space and power. (Starship will be able to haul 100 tons of payload to the lunar surface.)
Thursday's announcement deepens SpaceX's involvement with NASA's moon-exploration plans, which was already extensive. For example, the company is eligible to deliver robotic NASA payloads to the lunar surface using Starship, work the space agency says will help pave the way for crewed Artemis visits.
And last month, SpaceX secured a contract to supply Gateway, the small space station that NASA plans to build in lunar orbit as a jumping-off point for surface missions, using an extra-large version of its Dragon cargo capsule. Gateway is an important part of the agency's long-term moon plans but will probably not be involved in the 2024 landing, agency officials have said.
Related: What is NASA's Artemis program?
Dynetics' 2-person lander
Whereas Starship represents a single-stage approach to lunar landing, Alabama-based Dynetics will develop "a two-stage architecture, with a common ascent and descent element and anytime abort capability," Lisa Watson-Morgan, Human Landing System program manager at NASA's Marshall Space Flight Center in Huntsville, Alabama, said in a teleconference with reporters on Thursday.
"It has a unique low-slung crew module, putting the crew very close to the lunar surface for safe access," Watson-Morgan added.
The Dynetics lander's crew module is designed to accommodate two astronauts on trips to and from lunar orbit, including stays on the moon's surface of about a week, representatives of the company, which is a wholly owned subsidiary of Leidos, said in a statement. But that's the nominal use case; the lander could also fit four fully suited astronauts on brief trips to or from the lunar surface if need be.
Blue Origin's 'National Team'
The third team is led by Jeff Bezos' Blue Origin, with participation from Lockheed Martin, Northrop Grumman and Draper. This group will develop a three-stage architecture, which features descent, ascent and transfer elements.
The descent stage will be based on Blue Origin's Blue Moon lander and BE-7 engine, which the company has been working on for a few years now. The ascent stage will leverage Lockheed's experience developing the Orion crew capsule. (Lockheed is prime contractor for Orion, NASA's next crewed vehicle, which will carry agency astronauts toward the moon and other deep-space destinations.)
The transfer element will be based on Northrop Grumman's Cygnus freighter, which flies robotic cargo missions to the International Space Station under a separate NASA contract. Draper, meanwhile, will lead descent guidance and provide flight avionics, Blue Origin representatives said in a statement.
NASA solicited proposals for human landing systems in late September 2019, and submissions were due in early November. At the time, the agency was hoping the call would inspire innovative concepts, Watson-Morgan said.
"And boy did they deliver," she said Thursday of the three awardees.
Watson-Morgan also highlighted the diversity of architectures, saying it achieves the "dissimilar redundancy of approaches that we wanted."
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Mike Wall is the author of "Out There" (Grand Central Publishing, 2018; illustrated by Karl Tate), a book about the search for alien life. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or Facebook.
