Inversion Space, founded in 2021 by Boston University students Justin Fiaschetti and Austin Briggs and backed by Y Combinator, builds reentry vehicles that park cargo in orbit and bring it down on demand, inverting the usual direction of space logistics: instead of launching goods when they are needed, the goods wait overhead and come back within an hour of the request.
Its flagship vehicle, Arc, was unveiled on October 1, 2025 as a fully reusable lifting body about four feet across and eight feet tall that stores roughly 500 lb of payload on orbit for up to five years, survives reentry above Mach 20, steers more than 1,000 km of cross-range, and touches down under an autonomously guided parachute within about 50 feet of a target, needing no runway and using non-toxic propellants so crews can approach it immediately. The company has raised roughly $54 million, most of it a $44 million Series A in November 2024 co-led by Spark Capital and Adjacent with Lockheed Martin Ventures and Kindred Ventures, on top of a $71 million STRATFI award from AFRL and SpaceWERX in September 2024. Its pathfinder, the 20-inch Ray capsule, launched on SpaceX's Transporter-12 in January 2025 and validated avionics, power, propulsion, and separation, but a short circuit kept the deorbit engine from igniting, so it never flew the reentry it was built to demonstrate. Defense demand has arrived ahead of the flight record: Inversion was selected into Kratos' $1.45 billion MACH-TB 2.0 hypersonic test program in September 2025 and joined Anduril's team for the Space Force's Golden Dome space-based interceptor work in May 2026. On September 10, 2026 NASA awarded Inversion a $350,000 firm-fixed-price study (through June 30, 2027) of using Arc for an Earth aerocapture demonstration, and CEO Justin Fiaschetti told Payload the first in-space Arc demonstration is now planned no earlier than 2027, slipping the 2026 first-flight target set at unveiling. It operates a 55,000-square-foot Los Angeles factory and a five-acre Mojave test site with about 60 employees, and the whole thesis still rests on flying Arc for the first time.
The mission that decides whether the company has a product: launching Arc, holding it on orbit, deorbiting under control, surviving a Mach 20-plus reentry, and landing under parachute close to a target. Ray never got past the deorbit burn, so this is the first real test of the reentry stack end to end. At the October 2025 unveiling Inversion targeted 2026; on September 10, 2026 CEO Justin Fiaschetti told Payload the first in-space demonstration is now planned no earlier than 2027. Watch for a launch assignment and an FAA reentry license for the Arc configuration.
Inversion's selection into Kratos' MACH-TB 2.0 program gives it a paying use for reentry itself. Kratos completed its $50 million, 68,000-square-foot Indiana Payload Integration Facility in Crane, Indiana on July 28, 2026, ahead of schedule, the dedicated site built to prep hypersonic test payloads like Arc for flight. Watch for the first task order and the first customer payload flown through hypersonic conditions on an Inversion vehicle, the point at which the reentry capability starts generating revenue independently of the cargo-delivery thesis.
Deliver reentry hardware for Golden Dome interceptors
Under the Anduril-led space-based interceptor team named in May 2026, Inversion's maneuvering and reentry work feeds the Space Force's Golden Dome architecture. All 12 SBI prototype teams, including Anduril's, cleared Gate 1 (design lock and component-level testing) by the August 11, 2026 Space and Missile Defense Symposium and are moving into Gate 2, building hardware meant to operate in space; two further gates prove on-orbit performance and integration into the wider architecture, which the service wants to demonstrate initial capability for by 2028. That schedule now carries real funding risk: Golden Dome's fiscal 2027 budget is roughly 97 percent dependent on a second reconciliation bill with thin bipartisan support, and program director Gen. Michael Guetlein warned in August 2026 that a funding lapse in October 2026 would halt the program outright. Watch for Gate 2 completion, a defined subcontract scope for Inversion specifically, and any prototype flight demonstration tied to it.
NASA awarded Inversion a $350,000 firm-fixed-price study on September 10, 2026 to examine how Arc could demonstrate aerocapture in Earth's atmosphere - using a lifting-body atmospheric pass to brake into orbit instead of a propulsive capture burn. The work, supported at NASA Ames, runs through June 30, 2027 and covers mission design, aerodynamics, trajectory analysis, and vehicle definition. Fiaschetti framed it as a side quest that also helps Earth-orbit maneuverability. Watch for study results and whether NASA funds a follow-on flight demonstration.
CEO Justin Fiaschetti has put constellation deployment around 2028, which implies producing hundreds of vehicles a year. That is a manufacturing problem as much as an aerospace one, and the gap between one flight article and a production line is where most reentry programs stall. Watch for factory expansion beyond the current 55,000 square feet and for a multi-vehicle order from the Air Force or Space Force.
revenue to date is government contract funding (STRATFI, MACH-TB, Golden Dome teaming, and a $350K NASA aerocapture study), not delivery service
Largest government award
$71M STRATFI
AFRL / SpaceWERX, Sep 2024
Hypersonic test program
Selected into MACH-TB 2.0
program ceiling $1.45B
Arc payload capacity
~500 lb stored on orbit for up to 5 years
Arc landing accuracy
Within about 50 feet of target, under an autonomous parachute
Arc reentry envelope
Mach 20+, over 1,000 km of cross-range
Orbital flights to date
1
(Ray, Jan 2025; reached orbit, reentry not achieved). First Arc flight now NET 2027
Facilities
55,000 sq ft Los Angeles factory plus a 5-acre Mojave test site
Employees
~60
company page, re-verified September 2026
NASA aerocapture study
$350,000 firm-fixed-price award
Sept 10, 2026; through June 30, 2027
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Operations & revenue
Operating status
Pre-operational: Arc in build, first orbital flight slipped to NET 2027
Inversion has one orbital flight behind it and it was a partial failure: Ray reached orbit in January 2025 and checked out its subsystems, but a short circuit stopped the deorbit burn, so the company has not yet demonstrated the one capability its entire business rests on, controlled reentry and precision landing. Arc is the vehicle that has to prove it. Hardware progress is real, with a full-scale structural development unit built, a mission profile closed, dozens of parachute drop tests run, and NASA now also funding a $350,000 aerocapture study through June 2027. The first Arc mission, targeted for 2026 at the October 2025 unveiling, is now planned no earlier than 2027 per CEO Justin Fiaschetti's September 10, 2026 comments to Payload. An operational constellation around 2028 would still require producing hundreds of vehicles a year. Money and demand are not the constraint: a $44 million Series A, a $71 million STRATFI award, a seat in the $1.45 billion MACH-TB 2.0 hypersonic testbed program, a place on Anduril's Golden Dome interceptor team, and the NASA study give it customers before it has a product. Schedule and reentry physics are the constraint, and the hypersonic testbed work is the near-term hedge that pays whether or not the on-demand cargo market appears.
Revenue streams
Defense cargo delivery from orbit
The core proposition: constellations of Arc vehicles pre-positioned in low Earth orbit, holding cargo for allied militaries and deorbiting on request to put it anywhere on the planet in under an hour, including in denied environments where aircraft and ships cannot go. Funded so far through the $71 million AFRL and SpaceWERX STRATFI award rather than delivery revenue.
Hypersonic flight testing
Selling reentry as a test service: an Arc coming home above Mach 20 is a reusable hypersonic testbed, and Inversion's selection into Kratos' MACH-TB 2.0 program gives it a way to bill for flights while the cargo market is still theoretical. This is the nearest-term revenue line.
Reentry systems for defense primes
Supplying reentry and maneuvering expertise into larger programs, most visibly as part of the Anduril-led team working on space-based interceptors for the Space Force's Golden Dome architecture announced in May 2026.
NASA aerocapture study
A $350,000 NASA firm-fixed-price award (September 10, 2026, through June 30, 2027) to study how Arc could demonstrate aerocapture in Earth's atmosphere for future interplanetary missions. Small next to STRATFI, but it is new contracted study work and a NASA relationship beyond thermal-protection collaboration.
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Track record
How past announced dates turned out.
0/2announced dates hit on time
0 Hit
1 Slipped
1 Missed
Slipped
First orbital flight of Arc
Target 2026 · Resolved Sep 10, 2026
Inversion targeted a 2026 first Arc orbital mission when it unveiled the vehicle on October 1, 2025. On September 10, 2026 CEO Justin Fiaschetti told Payload the first in-space demonstration of Arc is now planned no earlier than 2027, as the company takes on a NASA aerocapture study. The 2026 window was not met and the flight is still expected, so the milestone slips rather than misses. See the current nextSteps entry for the new target.
Ray launched on Transporter-12 on January 14, 2025 with an FAA reentry license in hand and successfully checked out avionics, solar power, propulsion, and separation on orbit. A short circuit in a component prevented the deorbit engine from igniting, so reentry became impossible and the capsule was never recovered. Inversion folded the flight data into Arc rather than reflying Ray.
NASA awards $350K Arc aerocapture study; first flight slips to 2027
On September 10, 2026 NASA awarded Inversion a $350,000 firm-fixed-price purchase order, managed through NASA Shared Services Center with performance support at Ames Research Center, to study how Arc's lifting-body shape could demonstrate aerocapture in Earth's atmosphere - using atmospheric drag to brake into orbit rather than burning propellant. The study runs through June 30, 2027 and covers mission design, aerodynamics, trajectory analysis, and vehicle definition. In the same Payload interview, CEO Justin Fiaschetti said Inversion's first in-space demonstration of Arc is now planned no earlier than 2027, slipping the 2026 first-flight target the company set when it unveiled Arc in October 2025.
Anduril-led interceptor team clears Gate 1 of the Golden Dome demonstration
At the Space and Missile Defense Symposium in Huntsville on August 11, 2026, Golden Dome director Gen. Michael Guetlein says all 12 space-based interceptor prototype teams, including Anduril's team with Inversion, Impulse Space, K2 Space, and Voyager Technologies, have cleared Gate 1 (design lock and component-level testing) and are moving into Gate 2, building hardware meant to operate in space. Two further gates, proving on-orbit performance and integration into the wider Golden Dome architecture, remain ahead of the program's 2028 initial-capability target.
Joins Anduril's Golden Dome interceptor team
Anduril names Inversion on May 5, 2026 among the partners for the Space Force's space-based interceptor prototype work under Golden Dome, alongside Impulse Space, K2 Space, Voyager Technologies, and Sandia National Laboratories, with Inversion's reentry expertise applied to the interceptor problem.
2025
Arc unveiled at the Los Angeles factory
On October 1, 2025 Inversion reveals Arc, a reusable lifting-body delivery vehicle sized to hold about 500 lb on orbit for up to five years and return it anywhere on Earth in under an hour. The company says it has already built a full-scale structural development unit, completed the first mission profile, and run dozens of drop tests, and is working with NASA on the thermal protection system.
Selected into the $1.45B MACH-TB 2.0 hypersonic test program
Kratos selects Inversion in September 2025 for MACH-TB 2.0, the Pentagon's hypersonic testbed program worth up to $1.45 billion, opening a near-term revenue line: flying test payloads through real hypersonic reentry conditions rather than waiting for the cargo-delivery market to mature.
Ray reaches orbit but cannot come back
Ray launches January 14, 2025 on SpaceX's Transporter-12 rideshare and validates avionics, solar power, propulsion, and an in-house separation system on orbit. A short circuit in a component prevents the deorbit engine from igniting, so the capsule never performs the reentry it was built to demonstrate.
2024
$44M Series A co-led by Spark Capital and Adjacent
Announced November 20, 2024, the round brings in Lockheed Martin Ventures, Kindred Ventures, and Y Combinator alongside the co-leads, and is sized to carry the company through Arc's first flight.
FAA reentry license for the Ray demonstrator
The FAA issues Inversion a reentry license for Ray in October 2024, making it one of the first companies licensed under the Part 450 regime and clearing the demonstrator to come home from orbit.
2024
$71M STRATFI award from AFRL and SpaceWERX
In September 2024 Inversion wins a STRATFI award worth up to $71 million from the Air Force Research Laboratory and SpaceWERX, the largest commitment to date behind the idea of pre-positioning cargo in orbit for military delivery on demand.
2021
Founded by two Boston University dropouts
Justin Fiaschetti and Austin Briggs leave Boston University to start Inversion around the premise that returning things from space, not launching them, is the missing half of space logistics. The company goes through Y Combinator and closes a seed round announced in November 2021.
08
Funding
$54Mdisclosed across 2 rounds with a stated amount
RoundAmountInvestors
Seed
Nov 2021
$10M
Y Combinator and seed investors
Series A
Nov 2024
$44M
Spark Capital and Adjacent (co-leads), Lockheed Martin Ventures, Kindred Ventures, Y Combinator
