Radian Aerospace

Radian Aerospace is an American aerospace company based in the Seattle suburb of Renton, Washington and founded in 2016. The company is working on a spaceplane concept called Radian One. In January 2022, the company had closed a $27.5 million seed round led by venture capital fund Fine Structure Ventures. For the past few years, Radian has been working on rocket engine development at its Renton headquarters and at a testing facility near Bremerton, Washington. Radian is linked with Holder Aerospace, a Renton-based engineering company headed by former astronaut Livingston Holder and aerospace executive Curtis Gifford.