Two venture-backed small launch startups with contrasting paths — Relativity pivoting from 3D-printed small rockets to a medium reusable vehicle, while Firefly scales its operational Alpha rocket.
| Metric | Relativity Space | Firefly Aerospace |
|---|---|---|
| Founded | 2015 | 2014 (re-founded 2017 after bankruptcy) |
| Headquarters | Long Beach, CA | Cedar Park, TX |
| Publicly Traded | No (private) | Yes (Nasdaq: FLY) |
| Primary Vehicle | Terran R (medium lift, in development) | Firefly Alpha (small lift, operational) |
| Previous / Retired Vehicle | Terran 1 (retired after single flight, 2023) | N/A (Alpha is primary vehicle) |
| LEO Payload Capacity | Terran 1: 1,250 kg (retired); Terran R: ~20,000 kg target | Alpha: ~1,170 kg to LEO (~1,030 kg to SSO) |
| First Orbital Success | None (Terran 1 failed to reach orbit — upper stage anomaly; retired 2023) | Yes — Alpha Flight 2 (Oct 2022) |
| Launch Cadence (2024–2025) | 0 (Terran 1 retired; Terran R in development) | 2–3 missions per year |
| Manufacturing Innovation | 3D-printed rocket (Aeon engines, printed structure) | Conventional aluminum/carbon fiber; Reaver/Lightning engines |
| Reusability Plan | Terran R reusable first stage | No reusability on Alpha; Medium vehicle TBD |
| Total Funding Raised | ~$1.9B | ~$1.6B |
| Key Investors / Backers | BOND, Tiger Global, Fidelity, K5 Global | AE Industrial Partners, NASA (VCLS) |
| Launch Site | Cape Canaveral SLC-16 | Vandenberg SLC-2W; Cape Canaveral LC-20 |
| Government Contracts | NASA VCLS (Terran 1, since cancelled) | NASA VCLS, USSF contracts |
| Current Strategic Focus | Pivot to Terran R medium-lift reusable rocket | Scaling Alpha cadence; Medium vehicle development |
Figures as of Sep 4, 2026 (auto-updated daily from company profiles).
Relativity Space made headlines for building the world's first 3D-printed orbital rocket, Terran 1, which failed to reach orbit on its single flight in March 2023 due to an upper-stage ignition anomaly and was subsequently retired. The company pivoted its entire focus to Terran R — a medium-lift rocket with a reusable first stage, targeting the same market segment as Rocket Lab's Neutron. This bold pivot required significant restructuring and eliminated Relativity's near-term revenue pathway from Terran 1 launches.
Firefly Aerospace achieved orbital success on its second Alpha flight in October 2022, making it one of the few new-entrant launch companies to reach orbit. Alpha serves the 1,000 kg class small satellite market and has been building commercial and government launch cadence since. Firefly also won a NASA Commercial Lunar Payload Services (CLPS) task order for a lunar lander mission (Blue Ghost), expanding its business beyond just launch. Firefly's ownership structure has evolved — it was majority acquired by AE Industrial Partners after earlier Ukrainian investor ties were unwound.
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