Pick up to 4 launch vehicles to compare side-by-side. State lives in the URL — share the link and the comparison loads exactly as you left it.
The global launch market reached $14.1 billion in 2024 — up 34% since 2021.
| Attribute | |||
|---|---|---|---|
| Company | Space One | Arianespace / ArianeGroup | Firefly Aerospace / Northrop Grumman |
| Country | 🇯🇵 Japan | 🇪🇺 Europe | 🇺🇸 USA |
| Status | In Development | Retired | In Development |
| Vehicle class | Small | Heavy | Medium |
| Propellant | Solid | LH₂ / LOX (Vulcain 2) + solid HTPB boosters | RP-1 / LOX |
| Reusable | No | No | Yes |
| Stages | 4 | 2 | 2 |
| First flight | 2024 | 1996 – 2023 | 2027 |
| Payload to LEO | — | 21,000 kgas of [1]Ariane 5 ECA configuration ↑ Best | 16,000+ kgas of [1]5 m fairing. Renamed from 'Medium Launch Vehicle' (MLV) to 'Eclipse' in May 2025 alongside the Northrop Grumman partnership. First stage (7 Miranda engines) designed for reuse from roughly the 6th flight onward; second stage uses one Vira engine. First flight targeted 2027 — stated plan, not yet flown. |
| Payload to GTO | — | 10,865 kgas of [1]ECA configuration. Ariane 5 ES (ATV) variant: 21,000 kg LEO ↑ Best | — |
| Height | — | 54 mas of [1] ↑ Best | — |
| Liftoff mass | — | 777 tas of [1] ↑ Best | — |
| Success rate | 0/3 — three consecutive failuresas of [1]2024-03-13: disintegrated shortly after liftoff. 2024-12-18: began tumbling during 1st-stage burn, flight terminated. 2026-03-04: flight termination activated ~70 seconds after liftoff. All three launches flew from Spaceport Kii, Wakayama — Japan's first private-sector spaceport. Program grounded as of this research; precise payload/height/mass specs not confirmed from a primary source. | 97.5%as of [2]113/117 successes. Failures: V501 (Jun 1996, first flight), V63 (Dec 2002, off-course but payload recovered). 2 partial successes. ↑ Best | — |
| Total flights | 3as of [1] | 117as of [2]VA261 (Jul 5, 2023) was the final Ariane 5 flight. Launched the James Webb Space Telescope (Dec 2021). ↑ Best | — |
| Cost / kg LEO | — | — | — |
| Summary | A Japanese commercial solid-fuel small launcher that has failed on all three flight attempts through March 2026, putting its commercial viability in serious question. | Europe's dominant heavy-lift rocket for 27 years. Its most famous payload: the James Webb Space Telescope (Dec 25, 2021). Retired Jul 5, 2023 to make way for Ariane 6. Responsible for launching over 250 commercial and scientific payloads including XMM-Newton, Rosetta, and BepiColombo. | A medium-lift successor to Firefly's Alpha, co-developed with Northrop Grumman, aimed at the national-security and commercial medium-lift gap between small launchers and heavy-lift vehicles. |
48 launch vehicles across 10 countries — active, retired, and in development — with primary-source citations from manufacturer user guides and agency press kits. Pure URL state: bookmark or share the link and the comparison reproduces exactly.