Impulse Space, founded by SpaceX's first employee, has completed a $500 million Series D funding round, reaching a valuation of $4.26 billion.

BlockBeats News, June 4th, according to Tech Funding News, Tom Mueller, SpaceX's first employee, founded the space infrastructure company Impulse Space, which has completed a $500 million Series D funding round. The round was co-led by 137 Ventures and BANNER VC, valuing the company at $4.26 billion post-money. With this funding, Impulse Space has raised over $1 billion in total.

Established in 2021, Impulse Space focuses on solving maneuvering challenges after spacecraft launch. The company builds chemical propulsion spacecraft for rapid trajectory changes, orbit transfers, and on-orbit maneuvers. Its Mira Precision Maneuvering Spacecraft has completed multiple missions, and the Helios high-energy upper stage is set for its first flight in 2027, aiming to rapidly deliver payloads to GEO, the Moon, and Heliocentric orbits.

Tom Mueller, a former SpaceX employee who led the development of the Merlin engine for Falcon 9 and the Raptor engine for Starship, emphasized that Impulse Space is not just about building spacecraft but about constructing the economic and technological engine to propel humanity into space.