Compare rockets
Pick up to 4 vehicles to compare specs and flight records side by side. Browse all →
| Specification | Firefly Alpha Block 2 Firefly Aerospace × remove | Soyuz U Russian Federal Space Agency (ROSCOSMOS) × remove | Tsiklon-2 Yuzhnoye Design Bureau × remove |
|---|---|---|---|
| Flights | 0 | 714 | 105 |
| Success rate | — | 97.2% | 98.1% |
| Thrust | 736 kN | — | 2,366 kN |
| Height | 31.6 m | 51.1 m | 39.7 m |
| Diameter | 1.82 m | 2.95 m | 3 m |
| Launch mass | 54 t | 313 t | 182 t |
| LEO capacity | 1,030 kg | 6,900 kg | 2,820 kg |
| GTO capacity | — | — | — |
| Launch cost | $15M | — | $12M |
| Reusable | No | No | No |
| Stages | 2 | 3 | 3 |