Shannon started to focus on ideas that were viable. What made a lot of sense was the ability to build a very small crew-tended space station around the Moon
, he says. Gateway gives you a place for crews to get set up before they go down to the surface. It gives you an opportunity to control remote vehicles on the surface.
It would also act as a safe haven were anything to go wrong during a mission.
The Apollo missions took all the hardware necessary for completing the mission with them to the Moon. Nasa put them on a path around the Moon called a free return trajectory, which would get them safely back to Earth if, for example, an engine didn’t fire to send them into lunar orbit. But this limited them to landing in a narrow band around the equator.
Gateway will be higher up, in an oval-shaped path around the Moon called a Near Rectilinear Halo Orbit (NRHO), giving Nasa the ability to land wherever it wants.
The administration cited Chinese lunar ambitions while justifying the return date of 2024. Some observers think space-faring nations like the US, China and Russia will need to coordinate lunar exploration to navigate murky legal waters over who owns lunar resources.
I think there’s a very large risk of geopolitical conflict
, says Phil Metzger. If a single nation decides to go it alone on creating industry in space, then eventually that single nation would have a tremendous political, economic and military advantage.
Ignoring the potential of space resources just creates a power vacuum, he says: The ethical way to fill it would be to do it cooperatively, internationally, trying to make sure that all humanity benefits.
Paul Rincon
Despite criticism, I am very supportive of NASA’s Artemis mission to the Moon, with the potential to cement a more sustained human presence on the Moon and to reach beyond it into the inner solar system. At the same time, this project should really have happened decades ago immediately after the Apollo program. I am somewhat pessimistic that these plans will come to fruition in the current form, not only delayed by budget cuts, but eventually changed beyond recognition by the shifting priorities and moods of each new American administration.