Updated October 4, 2026. Hardware status reflects the latest detailed company update checked for this refresh. 13 Aeon R engines on thrust structure $3B+ Company-stated launch agreements Late 2026 Company target, not a confirmed date October 2026: the rocket program, not just the printing story Relativity Space now has a more concrete story than the promise of printing rockets: flight hardware is coming together, government procurement doors are opening, and the launch site is being built out. The company’s August update, published September 11 , reports all 13 first-flight Aeon R engines installed on the thrust structure. NASA added Terran R to its launch-services contract on September 9, and a September 28 federal notice describes the FAA’s environmental finding for the launch program. Those are three different kinds of progress. Engine installation is a hardware milestone. NASA contract entry is a way to compete for missions. Environmental review addresses a regulatory requirement. None should be mistaken for a completed orbital flight or proof that the entire vehicle is ready to launch. This refresh separates those milestones and replaces the older article’s February hardware snapshot with the latest detailed company report available in the sources checked on October 4. Terran R concept illustration. AI-generated, not a flight photograph. What changed on the factory floor All 13 sea-level Aeon R engines have been installed on the first-flight thrust structure, according to the August report. Each engine is rated at 269,000 pounds-force of sea-level thrust, giving the first stage a stated total of 3,497,000 pounds-force. The company describes ground equipment that will rotate the assembled thrust structure for mating with stage one. The distinction matters: engines mounted to a thrust structure are not the same thing as a fully integrated, hot-fired first stage. Stage-one structural integration continued through installation of joiners, external stringers and raceway hardware. Its downcomer, the plumbing that carries liquid oxygen from the tank to the engines, completed acceptance testing and was handed to the mechanical assembly team. Interstage barrels were painted and stacked, with fluid doublers and brackets still being installed. These details move the story beyond a tank-welding milestone while showing how much integration remains. Work also extends beyond the first rocket. Relativity says all first- and second-stage barrels for flight two are complete, circumferential friction-stir welding has begun on that vehicle’s first-stage tank, and flight-three panel fabrication is more than halfway complete. Aeon R acceptance testing for flight two is underway at Stennis. That is evidence of a developing production pipeline, not yet evidence of a demonstrated launch cadence. Cryoproof is complete; integrated hot fire is a separate test The July company update reported completion of stage-one structural qualification using a dedicated test article. The campaign included 420 pressure cycles, 62 proof, stability and ultimate loading cases, and axial compression reaching roughly 4.3 million pounds-force while pressurized. Those are structural qualifications, not flight results. At NASA Stennis, the second-stage tank completed cryoproof testing and composite-overwrapped pressure-vessel proof testing. July’s report also said the Aeon V vacuum engine had completed acceptance testing, closing out the engine test campaign for flight one. In August, the tank was back in the hangar for post-cryoproof inspections ahead of Aeon V installation, while teams prepared the A2 stand for hot-fire operations. A cryoproof campaign exposes tanks and associated systems to cold fluids and pressure. A hot fire adds operating propulsion, thermal loads, fluid transients and integrated control behavior. Passing one does not mean the other has happened. The August report describes stage hot fire as upcoming; the sources checked for this refresh do not establish a later completed integrated hot-fire campaign. Aeon engine test illustration. AI-generated, not a test record. Cape Canaveral: building the systems around the rocket At Launch Complex 16, August work included flame-diverter installation, launch-table steel construction, the liquefied-natural-gas tank farm and lightning protection. The horizontal integration facility was being outfitted, the transporter-erector upper strongback was progressing, and the engineering support building opened. July had already brought permanent site power and a proof-load test for the integration building’s crane. These facilities are part of the launch system, not background scenery. The flame diverter handles exhaust, heat and acoustic energy; ground fluid systems load and condition propellants; the transporter-erector moves the integrated vehicle into launch position. A finished rocket still depends on commissioned ground equipment, rehearsed operations and the required approvals. Construction progress is useful schedule evidence, but it does not provide a firm launch window. NASA access and FAA review: what September actually delivered On September 9, NASA announced an NLS II contract award to Relativity and its Terran R launch service through the annual on-ramp provision. NLS II is a multiple-award, indefinite-delivery/indefinite-quantity framework. Its ordering period runs through June 2030 and its overall performance period through December 2032. NASA said the service would be available for future missions. The announcement does not name a specific Terran R mission award. Relativity’s July report also says the company entered the National Security Space Launch Phase 3 Lane 1 program. Both procurement developments broaden potential demand. They should not be counted as completed missions, launch revenue already earned, or guarantees that a specific NASA or national-security payload will fly on a particular date. The September 28 Federal Register notice announces availability of the FAA’s Finding of No Significant Impact and Record of Decision for the Space Force’s 2024 supplemental environmental assessment of the Terran R program at Cape Canaveral. That is an environmental decision. The notice is not itself evidence that an FAA vehicle operator license has been issued, and this article does not present it as launch authorization. Terran R’s published specifications and commercial position Relativity’s current vehicle page describes a two-stage rocket measuring 86.6 meters tall and 5.4 meters in diameter. Published payload targets are 23,500 kilograms to low Earth orbit with a downrange first-stage landing, 33,500 kilograms in expendable configuration, and 5,500 kilograms to geosynchronous transfer orbit with a downrange landing. These are design capabilities, not performance demonstrated in flight. Thirteen Aeon R engines power stage one and a single vacuum-optimized Aeon V powers stage two. Both use liquid oxygen and methane with a high-pressure gas-generator cycle. The recovery plan concerns the first stage; calling Terran R reusable should not imply that both stages return for another flight. The vehicle page now states more than $3 billion in launch-service agreements across government, commercial and telecommunications customers and partners. That supersedes the old profile’s $1.2 billion headline, but the categories are not automatically comparable: agreements are not the same as recognized revenue, and the page does not provide a customer-by-customer accounting of binding obligations. An expanded SES agreement announced in November 2025 remains a concrete example of customer demand. It names multiple launches, not a guaranteed date for a specific SES flight. The company’s vehicle page still says launches will begin in late 2026. Treat that as the company’s target, not a confirmed launch appointment. Integrated stage testing, vehicle assembly, ground-system readiness and licensing remain more useful checkpoints than repeating a c