Space & Satellites
NASA Awards Contract to Modify Boeing 737 for Lunar Gravity Testing
NASA contracts Denmar Technical Services to convert a Boeing 737-700 into a reduced-gravity test aircraft for Artemis lunar missions.

This article is based on an official press release from NASA.
NASA has awarded an $8.4 million contract to Nevada-based Denmar Technical Services to modify a Boeing 737-700 into a dedicated reduced-gravity test aircraft. Announced on June 1, 2026, the acquisition is a critical step in preparing for the agency’s upcoming lunar exploration missions.
According to the official NASA press release, the newly modified aircraft will serve a highly specific and vital role for the Human Spaceflight Mission Directorate. By flying in parabolic arcs to simulate the one-sixth gravity of the Moon, the aircraft will allow engineers and astronauts to test next-generation equipment safely.
“The aircraft will be used to validate astronaut lunar suits and associated crew systems required to support Artemis mission objectives.”
— NASA Press Release
This move marks a strategic shift for the space agency, transitioning away from reliance on commercial zero-gravity flight providers and bringing the capability back in-house to ensure readiness for the planned 2028 Artemis III lunar landing.
Contract Details and Aircraft Modernization
Upgrading the “Vomit Comet” Fleet
The firm-fixed-price contract awarded to Denmar Technical Services carries a maximum potential value of $8.4 million and includes time and material provisions for unforeseen work. The modification project is scheduled to run through February 1, 2027.
Historically, NASA operated its own reduced-gravity aircraft, most notably the KC-135 Stratotanker and the McDonnell Douglas C-9, which earned the affectionate nickname “Vomit Comet” among astronauts. In recent years, the agency retired its dedicated fleet and relied heavily on commercial providers, primarily utilizing an aging Boeing 727-200 operated by the Zero Gravity Corporation. By purchasing and modifying a commercial Boeing 737-700, NASA is upgrading its testing infrastructure to a much more modern, efficient, and easily maintainable airframe.
Once the extensive structural modifications are complete, NASA’s Armstrong Flight Research Center in Edwards, California, will officially own the aircraft. Ongoing flight operations will be overseen by the Johnson Space Center in Houston, Texas.
The Artemis Connection and Spacesuit Validation
Meeting the 2028 Lunar Landing Goal
The primary objective of the newly modified Boeing 737-700 is to test the next-generation lunar spacesuits currently under development by Axiom Space. Simulating the Moon’s partial gravity is an absolute necessity for evaluating suit mobility, joint flexibility, and life-support systems before astronauts step onto the lunar surface.
The timeline for these validation tests is critical. Following the successful crewed lunar flyby of Artemis II in April 2026, NASA is heavily focused on the Artemis III mission, which targets a human return to the Moon by 2028.
AirPro News analysis
We note that spacesuit development has been a closely watched bottleneck for the Artemis program. An April 2026 report by the NASA Office of Inspector General (OIG) cautioned that spacesuit development was behind schedule and might face delays pushing readiness to 2031. However, NASA Administrator Jared Isaacman has publicly pushed back against the OIG’s estimate, maintaining confidence in the 2028 timeline.
Securing a dedicated, in-house reduced-gravity aircraft appears to be a direct measure to mitigate testing delays and keep the Axiom suit development on track. While the $8.4 million contract is a relatively small financial figure for NASA, it represents a massive, critical-path milestone. Taking ownership of the aircraft ensures the agency has uninterrupted, on-demand access to testing facilities as the 2028 deadline approaches.
About Denmar Technical Services
Specialized Engineering for Parabolic Flight
Modifying a standard commercial airliner to withstand the repeated structural stresses of two-G pullouts and zero-G push-overs, is a highly specialized engineering feat. Denmar Technical Services, an employee-owned small business headquartered in Reno, Nevada, was selected for its deep expertise in this niche field.
Founded in the early 1980s, Denmar specializes in aircraft modifications, flight test operations, and advanced mission system development. The company has a long-standing relationship with the U.S. Government and the Department of Defense, having previously worked on highly specialized, classified radar-testing aircraft such as the Air Force’s NT-43A. Their background in structural analysis and airworthiness certification makes them uniquely suited to ensure the Boeing 737-700 can safely execute parabolic maneuvers for human spaceflight testing.
Frequently Asked Questions
What is a reduced-gravity aircraft?
A reduced-gravity aircraft flies in specific wave-like patterns called parabolic arcs. At the top of the arc, passengers and payloads experience a period of weightlessness or partial gravity (such as lunar or Martian gravity) for a short duration, allowing for the testing of equipment in space-like conditions.
Why is NASA buying a Boeing 737-700?
NASA is transitioning from renting time on older, 1970s-era commercial jets to owning a modern Boeing 737-700. This provides the agency with a more reliable, efficient, and easily maintainable aircraft, ensuring on-demand access for critical Artemis testing.
Sources:
NASA Press Release: NASA Awards Modification Contract for Reduced Gravity Test Aircraft
Photo Credit: NASA
Space & Satellites
Planet Labs Germany and Isar Aerospace Sign Launch Deal
Planet Labs Germany and Isar Aerospace target a Pelican satellite launch within 12 months aboard the Spectrum rocket from Norway.

Planet Labs Germany and Isar Aerospace have signed a strategic launch agreement to send a next-generation Pelican satellite into orbit, marking the first time a German-built satellite will fly on a domestic launch vehicle. The mission will utilize Isar Aerospace’s Spectrum rocket lifting off from the company’s dedicated complex at Andøya Space in Norway.
Announced in a press release on July 2, 2026, the partnership targets a launch window within 12 months, potentially placing the mission as early as late 2026. The agreement pairs a subsidiary of Earth observation operator Planet Labs PBC with a European launch startup to demonstrate sovereign space capabilities for the German commercial space sector.
Expanding German Space Manufacturing
The Pelican satellite designated for this mission will be assembled at Planet’s upcoming manufacturing facility in Berlin. To support the expansion of its production capabilities, Planet expects to add 70 new employees to its existing Berlin workforce of approximately 150 personnel.
Isar Aerospace will manufacture the Spectrum launch vehicle at its 40,000-square-meter factory located near Munich. The launch provider plans to scale its production capacity to build 40 launch vehicles per year at the Munich site to meet commercial and government demand.
Germany has set out an ambitious space agenda. Planet and Isar Aerospace are responding to the moment and delivering a first for the country: both satellite and rocket built in Germany.
Martin Polak, Managing Director of Planet Labs Germany, stated that the joint teams aim to execute the first launch within less than 12 months of the agreement. He noted the timeline showcases an agile aerospace approach supporting national priorities across security, resilience, and civil applications.
Constellation Deployment and Launch Vehicle Status
Planet Labs PBC has been rapidly deploying its next-generation high-resolution Pelican constellation throughout the year. The company successfully launched three Pelican satellites on May 3, 2026, and announced the shipment of its Pelican-11 satellite to a launch site on June 2, 2026.
The launch agreement represents a significant commitment to Isar Aerospace. According to reporting by Aviation Week, the startup’s Spectrum launch vehicle has yet to reach orbit. The upcoming mission will serve as a critical test of the vehicle’s commercial viability.
Stella Guillen, Chief Commercial Officer of Isar Aerospace, said the collaboration underscores the growing strategic importance of the European space ecosystem. She added that the company’s integrated launch capability aims to serve a rapidly growing global demand for access to space.
AirPro News analysis
We view this agreement as a critical milestone for European sovereign space capabilities. By pairing a domestic payload with a domestic launch provider, Germany is demonstrating a closed-loop commercial space ecosystem that reduces reliance on foreign launch services. However, the aggressive 12-month timeline relies heavily on Isar Aerospace successfully debuting its Spectrum rocket, a vehicle that has not yet achieved orbit. If successful, this mission could position Isar Aerospace as a primary launch provider for European Earth observation constellations and validate Planet’s strategy of diversifying its launch portfolio.
Sources: Planet Labs / Business Wire
Photo Credit: Isar Aerospace
Space & Satellites
Firefly Aerospace Advances Esrange Launch Complex for 2028 Orbital Debut
Firefly Aerospace and SSC Space complete infrastructure at Esrange Space Center, targeting first orbital launch in 2028.

Firefly Aerospace and the Swedish Space Corporation (SSC Space) have completed initial infrastructure and secured transatlantic regulatory frameworks to advance pad construction at Launch Complex 3C at Sweden’s Esrange Space Center, targeting a first orbital launch in 2028.
Announced in a June 30, 2026, press release, the milestone establishes a foundation for dedicated orbital launch capabilities from mainland Europe. The partnership will utilize Firefly’s Alpha launch vehicle to serve European commercial customers and the Swedish Armed Forces, expanding access to space for allied nations.
Infrastructure and regulatory progress
The companies have completed several key infrastructure projects at Launch Complex 3C to support the upcoming orbital missions. The finalized facilities include a launch control center, a payload processing facility, and a launch vehicle integration building. The site also features newly installed tracking and control systems, alongside dedicated security and storage facilities.
The physical construction aligns with recent diplomatic agreements designed to facilitate international commercial space operations. In April 2026, the Swedish National Space Agency (SNSA) and the U.S. Federal Aviation Administration (FAA) signed a Memorandum of Cooperation to streamline the launch licensing process and establish a shared understanding of commercial space regulations. This agreement builds upon a broader framework, making Sweden the sixth country to sign a Technology Safeguards Agreement with the United States.
Defense applications and payload capabilities
The development at Esrange Space Center carries direct implications for European defense logistics. SSC Space recently signed an agreement valued at SEK 209 million with the Swedish Defense Materiel Administration (FMV). The contract is structured to provide the Swedish Armed Forces with dedicated satellite launch capabilities from the domestic spaceport.
Missions from Launch Complex 3C will utilize the Firefly Alpha, a two-stage launch vehicle capable of delivering a 1,000-kilogram payload to Low Earth Orbit (LEO). The deployment of an American rocket from European soil represents a specific operational strategy for the Texas-based manufacturer.
“We’re proud to partner with SSC Space and work collaboratively with U.S. and Swedish agencies to provide European customers with a dedicated orbital launch capability using our flight-proven Alpha rocket. Our ‘launch as a franchise’ model provides our nation and allies with the launch site diversification required for resilient, responsive space missions.”
The statement from Firefly Aerospace CEO Jason Kim highlights the company’s focus on global launch expansion, utilizing the Swedish site as the starting point for its international franchise model.
AirPro News analysis
We view Firefly’s “launch as a franchise” model as a strategic pivot in the commercial space sector, moving away from centralized domestic launch sites toward distributed, allied-nation launch capabilities. The SEK 209 million defense agreement underscores the growing military reliance on commercial launch providers for responsive space access. By establishing a physical and regulatory foothold at Esrange Space Center, Firefly positions the Alpha rocket to capture a significant share of the emerging European small-lift market, while simultaneously offering the U.S. and its allies redundant launch options outside of traditional North American spaceports.
Sources: Firefly Aerospace
Photo Credit: Firefly Aerospace
Space & Satellites
Rocket Lab to Acquire Iridium Communications for $8 Billion
Rocket Lab agrees to acquire Iridium Communications for ~$8B, combining launch capabilities with Iridium’s LEO satellite network.

Rocket Lab Corporation (Nasdaq: RKLB) has entered into a definitive agreement to acquire satellite operator Iridium Communications Inc. (Nasdaq: IRDM) in a cash and stock transaction valuing the company at approximately $8.0 billion. The deal, announced on June 29, 2026, transforms the launch provider into a fully vertically integrated space enterprise with an immediate foothold in global satellite connectivity.
Under the terms detailed in a joint press release, Iridium stockholders will receive $54.00 per share, consisting of $27.00 in cash and a portion of Rocket Lab common stock based on a collar band exchange ratio between $67.50 and $112.50. The Acquisitions merges Rocket Lab’s launch and spacecraft Manufacturing capabilities with Iridium’s globally harmonized L-band spectrum and established Low Earth Orbit (LEO) satellite network, which currently supports 2.55 million active subscribers worldwide.
Strategic integration and market expansion
The transaction positions Rocket Lab to capture a larger share of the space-based applications Market-Analysis, including satellite Internet of Things (IoT), Direct-to-Device (D2D) communications, and Positioning, Navigation, and Timing (PNT) services. Iridium reported $871.7 million in revenue and $495 million in Operational EBITDA for 2025, providing Rocket Lab with a highly profitable, established communications business operating at a 57 percent margin.
A primary operational synergy of the merger is the elimination of third-party launch costs for the deployment and replenishment of the Iridium NEXT constellation. Rocket Lab intends to utilize its Electron and upcoming Neutron launch vehicles to guarantee orbital access and maintain continuity of service for the network.
Sir Peter Beck, Founder and CEO of Rocket Lab, described the agreement as a defining moment for the space industry and the start of a new era of strategic growth for both companies.
“By marrying Iridium’s deep heritage, trusted infrastructure, and highly sought-after spectrum with Rocket Lab’s extensive and proven launch and manufacturing capabilities, we have the capability to unlock entirely new markets,” Beck stated. “We will go far beyond maintaining a legacy; we are going to build upon it to pioneer next-generation space applications and deliver sought-after capabilities to existing and new customers.”
Accelerating next-generation satellite services
The acquisition occurs as the space and terrestrial communications sectors increasingly converge. Rocket Lab plans to leverage the combined company’s resources to accelerate the development of Iridium’s next-generation constellation. This includes advancing D2D services targeted at United States national security and emergency response sectors, where traditional terrestrial networks may be unavailable or compromised.
Iridium CEO Matt Desch noted that critical services will increasingly depend on space-based capabilities as the industry evolves. He emphasized that success in the sector requires bringing innovations to space quickly and sustaining them efficiently over time.
“We’re excited about being able to accelerate the next generation of IoT, aviation, maritime, PNT, and national security capabilities, and pursue new innovative applications as part of Rocket Lab,” Desch said.
To fund the cash component of the transaction, Deutsche Bank and Wells Fargo have committed a $3.6 billion, 364-day senior secured bridge term loan facility. The transaction is expected to close in mid-2027, pending approval from stockholders and regulatory authorities, including the U.S. Securities and Exchange Commission (SEC).
AirPro News analysis
We view this $8.0 billion acquisition as a structural shift in the aerospace sector, moving away from the traditional separation of launch providers and satellite operators. By bringing Iridium in-house, Rocket Lab secures an anchor tenant for its Neutron launch vehicle while simultaneously capturing the high-margin recurring revenue of Iridium’s subscriber base.
The timing is particularly notable given the tightening availability of global launch capacity. Owning internal launch capabilities insulates the Iridium network from external supply chain bottlenecks and launch delays. Controlling both the manufacturing of the spacecraft and the launch vehicle also allows for deep vertical integration, potentially lowering the capital expenditure required for future constellation upgrades and D2D network deployments.
Sources: Iridium Communications Inc. / Rocket Lab Corporation
Photo Credit: Rocket Lab Corporation
-
Aircraft Orders & Deliveries18 hours agoAerCap Orders 15 Boeing 787-9 Dreamliners at Farnborough 2026
-
Aircraft Orders & Deliveries12 hours agoRiyadh Air Orders 31 A350-1000s and 67 Boeing 787s
-
Aircraft Orders & Deliveries15 hours agoPhilippine Airlines Orders Up to 20 Boeing 787-10 Dreamliners
-
Commercial Aviation13 hours agoIndiGo Signs Record 1000 LEAP-1A Engine MoU with CFM
-
Aircraft Orders & Deliveries19 hours agoSMBC Aviation Capital Orders 100 Boeing 737 MAX at Farnborough
