An in-space propulsion company just raised a staggering amount of money

"The Space Force said, 'Hey, we know what that thing's for.'"

Jun 4, 2025 - 15:00

An in-space propulsion company just raised a staggering amount of money

This week an in-space propulsion company, Impulse Space, announced that it had raised a significant amount of money, $300 million. This follows a fundraising round just last year in which the Southern California-based company raised $150 million.

This is one of the largest capital raises in space in a while, especially for a non-launch company. To understand why Impulse was able to raise so much additional money so quickly, Ars caught up with founder Tom Mueller and the company's chief executive, Eric Romo. They explained that demand for Impulse's efficient in-space vehicles is high, and since early missions have worked well, the company wants to seize the moment to scale up its operations.

"We had been operating relatively conservatively, in how many people we were allowing ourselves to hire and capital expenditures," Romo said. "This will allow us to release a little bit of that conservatism and lean into some stuff like electric propulsion and potentially other vehicles that are going to allow us to grow long-term."

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