Former Key SpaceX Engineer’s Impulse Space Raises $300 Million

June 3, 2025, 12:00 PM UTC

Impulse Space raised $300 million in its latest funding round as the US-based startup looks to cash in on demand for its highly agile spacecraft.

Led by Tom Mueller, a founding member and employee No. 1 at Elon Musk’s SpaceX, Impulse Space develops spacecraft that can haul satellites across different orbits – known as “space tugs” in the industry.

The company so far has two such vehicles: the smaller Mira craft, which has flown two missions, and Helios, which can maneuver heavier payloads and will begin flying in 2026.

The Series C funding round was led ...

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