Blue Origin's seven engine New Glenn exploded in May. NASA actually needs the still untested nine engine variant for Artemis IV, and the architecture calls for four of those launches before any astronaut flies.
NASA's Artemis IV crewed Moon landing is not one rocket launch. It is at least four, all of them from a vehicle that has not yet left the pad and a variant that has not even been built yet. That architecture, not the May explosion of Blue Origin's first orbital rocket, is the load-bearing problem behind an Ars Live panel this week in which two industry analysts argued Blue Origin's contribution to NASA's second crewed lunar landing is almost certain to slip.
On May 28, Blue Origin's seven-engine New Glenn 7x2 exploded during a hot-fire test at Launch Complex 36A in Cape Canaveral. The rocket's propellant farm, liquid hydrogen, liquid oxygen, and liquid natural gas tanks, and the water tower survived. No one was injured. Blue Origin CEO Dave Limp told CNBC the company is "not rebuilding the same pad" and will instead adopt a "horizontal/vertical hybrid" launch configuration that was originally developed for the larger New Glenn 9x4 variant. Limp's stated target is to return New Glenn 7x2 to flight by the end of 2026 (Blue Origin).
The 7x2 is the rocket Blue Origin has actually flown. NASA, however, is not counting on it.
For Artemis IV, the fourth crewed Artemis mission, the architecture requires four launches of the 9x4, a heavier-lift configuration with nine first-stage engines and four upper-stage engines. The 9x4 has never launched. Blue Origin has not set a public target date for its debut, and outside estimates put first flight in late 2027 or early 2028 (Ars Technica).
On an Ars Live panel this week, Quilty Space director of research Caleb Henry said he is "not optimistic." Henry's working rule for company-stated timelines is to multiply by 1.5, a heuristic he applied during the panel. Main Engine Cut Off host Anthony Colangelo went further, saying it would not surprise him if 9x4 development slipped into the 2030s (Ars Technica).
NASA Administrator Jared Isaacman has signaled patience for now. Isaacman said Blue Origin remains "plan A" for the Blue Moon cargo lander launch and that NASA has "time beyond that point into 2027 before we're getting nervous," according to CNBC. That cushion, however, sits in front of the more demanding Artemis IV schedule, not the cargo lander alone.
The complexity is not theoretical. Blue Origin has framed the pad rebuild as a step toward higher flight cadence (Universe Today). The variant NASA actually needs has more engines, more tanks, and a four-launch mission profile. Each launch in that chain has to succeed for the next to matter, which is why the panel treated the 9x4 as a calendar question that does not end with first flight.
SpaceX's Starship Human Landing System is the parallel NASA program. Starship has its own test record, and SpaceX has flown more of its vehicle, but it has not yet flown humans to the Moon either. The competitive comparison between the two companies is not settled, and the Ars Live panel did not attempt to settle it. What it did attempt was to give the reader a way to read future Blue Origin schedule announcements: does the announcement reduce the four-launch-per-mission architecture, or does it push more work onto a less proven variant?
The watch items are concrete. Did Blue Origin commit to a public 9x4 first-flight date by the end of 2026? Did the pad rebuild stay on Limp's stated schedule? Did NASA Administrator Jared Isaacman or the agency's inspector general change the tone from "plan A" to anything less, and did that conversation happen before or after the 9x4's first flight? Each of those is a calendar item the reader can hold, and each is a test of whether the architecture, rather than the rocket, is what NASA is actually waiting on.