As the U.S. races to beat China to a crewed Moon landing, SpaceX and Blue Origin are locked in a space race of their own. Each company is developing a crew lander for NASA’s Artemis program , but only one can be the first to return American astronauts to the lunar surface. Those competing spacecraft are Blue Origin’s Blue Moon Mark 2 (MK2) lander and SpaceX’s Starship Human Landing System (HLS) . NASA hopes to test both landers during Artemis 3—an orbital demonstration mission slated for late 2027—ahead of the Artemis 4 crewed lunar landing attempt scheduled for 2028, but whether Starship HLS will be ready on time remains an open question. According to a recent update, it appears NASA is confident that MK2 will be. On Thursday, NASA shared a photo of a full-scale prototype of the MK2 crew cabin, which has arrived at Johnson Space Center in Houston, Texas, to support training and testing.…