NASA's Artemis lunar program: a crazy ambition but big unknowns. Even pushed back to 2026, the space agency's new objective to set foot on the Moon seems optimistic, given the level of development of habitable moon landings.

The Apollo program was wildly ambitious, but the strategy had the merit of being clear. NASA has developed a powerful rocket, called SLS, and a habitable capsule, Orion, capable of sending four astronauts to the Moon and bringing them back to Earth. This article is reserved for subscribers. You have 88% left to discover.