CesiumAstro

CesiumAstro is a space technology company that designs, manufactures, and tests full-stack communication systems and satellites for space, air, and ground missions. The company provides mission-ready hardware and software products across multiple categories including spacecraft (Element satellite), SATCOM terminals (Skylark mobile terminal for air, ground, and maritime platforms), space systems (Vireo Ka 576 and Vireo Ka 288 multi-beam phased array payloads, Nightingale single-beam payload), processors (Reconfigurable Processing Unit), and modules including software-defined radios and single-board computers. CesiumAstro's software-defined active phased array payloads integrate antennas, beamforming, processing, firmware, and software into flight-ready systems supporting beam steering, dynamic frequencies, and on-orbit reconfigurability. Applications include inter-satellite links, high-speed data downlinks, lunar communications, multi-beam connectivity, 5G NTN networks, and SATCOM connectivity. The company designs, manufactures, and tests all systems in U.S. facilities to strengthen domestic supply chains. Founded in 2017 and headquartered in Austin, Texas, CesiumAstro has raised $426.2M in Series C funding from investors including Airbus Ventures, Kleiner Perkins, Lavrock Ventures, Honeywell, Analog Devices, Franklin Templeton Investments, Trousdale Ventures, Development Bank of Japan, Quanta Computer, L3Harris, InMotion Ventures, Matter Venture Partners, Mesh Ventures, Assembly Ventures, Heico, and Forever Venture.