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 | Isar Aerospace | Arianespace / ArianeGroup | Space One |
| Country | 🇩🇪 Germany | 🇪🇺 Europe | 🇯🇵 Japan |
| Status | In Development | Retired | In Development |
| Vehicle class | Small | Heavy | Small |
| Propellant | LOX / kerosene (~80% manufactured in-house) | LH₂ / LOX (Vulcain 2) + solid HTPB boosters | Solid |
| Reusable | No | No | No |
| Stages | 2 | 2 | 4 |
| First flight | 2025 | 1996 – 2023 | 2024 |
| Payload to LEO | 1,000 kgas of [1] | 21,000 kgas of [1]Ariane 5 ECA configuration ↑ Best | — |
| 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 | 0/1 (first flight failed)as of [1]First flight from Andøya Spaceport (2025-03-30): liftoff succeeded but the rocket was terminated ~30 seconds in after a vent valve opened unexpectedly, causing loss of attitude control. Second flight ('Onward and Upward') repeatedly delayed through 2026 (weather, a safety-zone fishing vessel, a composite pressure vessel leak, then off-nominal fluid-system behavior as of 2026-06-15) — not yet flown as of this research. | 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 | 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. |
| Total flights | 1as of [1] | 117as of [2]VA261 (Jul 5, 2023) was the final Ariane 5 flight. Launched the James Webb Space Telescope (Dec 2021). ↑ Best | 3as of [1] |
| Cost / kg LEO | — | — | — |
| Summary | Germany's first orbital-class launcher attempt; its first flight in March 2025 was Western Europe's first orbital launch attempt from the European mainland. A qualification second flight carrying CubeSats and ESA experiments has slipped repeatedly through 2026. | 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 Japanese commercial solid-fuel small launcher that has failed on all three flight attempts through March 2026, putting its commercial viability in serious question. |
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.