ISImpulse Space
Orbital transfer vehicles, Mira, Helios, in-space mobility
Impulse Space develops orbital transfer vehicles (space tugs) that move satellites between orbits after launch. Founded by SpaceX engineer Tom Mueller, the company builds Mira for small payloads and Helios for heavy GEO transfers, with a Mars lander program under way with Relativity Space.
- Impulse leads in-space logistics after SpaceX engineer Tom Mueller founded it in 2021.
- Mira has flown three times since Nov 2023. Helios is ready for 2026 GEO transfer missions.
- Series D ($500M, Apr 2026) values the company at $4.26B; building Mars landers with Relativity.
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