When Blue Origin’s New Glenn rocket exploded on the launch pad last week, it wasn’t just a blow to the company but also to NASA’s lunar ambitions. To keep the Artemis timeline on track, the agency is now seeking an alternative launcher for Blue Origin’s Moon landers. The cargo lander, Blue Moon Mark 1 (MK1), was supposed to launch aboard New Glenn for a demonstration flight this fall. That mission will be the first of NASA’s Moon Base program and a critical step toward developing a Blue Moon Mark 2 (MK2), the crew lander Blue Origin is developing for future Artemis missions. Instead of delaying the mission until New Glenn is ready to fly again—which could take more than a year—NASA is “de-coupling the lander from the launch vehicle and the pad itself,” Administrator Jared Isaacman told FOX Business on Thursday. A NASA spokesperson confirmed to Spaceflight Now that the agency would like to see the launches of the MK1 and potentially MK2 move to a rocket that’s not New Glenn.…