Impulse Space, founded in 2021 by ex-SpaceX engineer Tom Mueller, is an in-space transportation company and space tug provider. It develops orbital transfer vehicles like Mira and Helios to move satellites and payloads from LEO to other orbits, including GEO, lunar, and Martian destinations. Impulse Space has partnered with companies like Relativity Space, Exolaunch, and Anduril, and was selected by NASA as a launch service provider under the VADR contract.
All verified mentions of this organization in source documents.
Impulse Space will coordinate with Space Systems Command engineers to establish a tiered mission assurance and risk-mitigation architecture for the vehicle.
Impulse Space’s first commercial flight of the Helios high-energy kick stage is scheduled for 2027.
Impulse Space will coordinate directly with Space Systems Command engineers under the initial $5 million capabilities assessment task order.
Impulse Space will receive an initial $5 million task order to complete preliminary on-ramping assessments.
Impulse Space’s Helios is a high-energy upper stage designed to work with a qualified medium-lift rocket provider.
Impulse Space raised a $500 million Series D in the first half of 2026.
Each Qianfan satellite has a specific impulse of 1,385 seconds.
Each Qianfan satellite uses an electric Hall-effect thruster burning krypton to generate 20 millinewtons of thrust with a specific impulse of 1,385 seconds.
GN-1 raises the YF-115’s specific impulse to 350 seconds.
GN-1 increased the YF-115’s specific impulse by 8.5 seconds.
Impulse Space operates two vehicle programs, Mira and Helios.
Impulse Space’s role on the Golden Dome program adds defense-grade guidance, navigation, and control requirements to its avionics stack.
Impulse Space closed a $500 million Series D on June 2.
Impulse Space is working as a subcontractor to Anduril Industries on the Space Force’s space-based interceptor prototype for Golden Dome.
Impulse Space will use the Series D funds for vehicles, propulsion systems, and operational architecture.
Impulse Space’s total capital raised now exceeds $1 billion.
Radiation-hardened flight computers are part of Impulse Space’s qualification picture.
Mira is Impulse Space’s last-mile maneuvering spacecraft for low Earth orbit.
Founders Fund, Lux Capital, and Linse Capital participated in Impulse Space’s Series D.
Impulse Space closed a $500 million Series D funding round.