CesiumAstro
Designs, manufactures, and integrates software-defined phased array communications systems, payloads, and satellites for space, airborne, and ground platforms
CesiumAstro designs, engineers, and manufactures software-defined phased array communications systems for space, airborne, and ground platforms. The company produces multi-beam active electronically scanned array (AESA) payloads, software-defined radios, single-board computers, and fully integrated LEO satellites. Its product portfolio includes Vireo, a multi-beam Ka-band phased array payload for satellite constellations; Nightingale, a single-beam Ka-band payload at TRL 9; Skylark, a flat-panel SATCOM terminal for mobile air and ground platforms; and Element, an integrated LEO satellite platform combining bus and payload into a single system. CesiumAstro also produces SpaceVPX-compatible components including reconfigurable digital processors and power supply modules. The company serves defense, civil, and commercial customers across applications including inter-satellite links, high-speed data downlinks, lunar communications, and 5G non-terrestrial networks. CesiumAstro operates AS9100-certified manufacturing facilities in Austin, Texas, with additional offices in Colorado, California, the United Kingdom, Germany, and Japan. Founded in 2017, the company has raised over $710 million in total funding, including a $470 million Series C round closed in February 2026.
Operates orbital transfer vehicles for last-mile satellite delivery, hosted payload services, space cloud computing, and in-orbit servicing
Designs, builds, and operates autonomous spacecraft for space domain awareness, debris removal, and in-orbit servicing using gridded ion propulsion
Operates a satellite-as-a-service platform that integrates, deploys, and operates customer payloads and AI applications on standardized LEO spacecraft