Compact rotating detonation rocket engines for in-space mobility.
| Date | Round | Amount |
|---|---|---|
| May 2026 | Pre Seed Zurich spacetech Stellar Alpina secured CHF 3.5M (€3.8M) in pre-seed funding led by Founderful to develop detonation-based propulsion for movement between orbits. | $4.4M |
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