Muon Space closes $89.5M Series B1 funding and acquires Starlight Engines

Muon Space closed a Series B1 round of $89.5 million ($44.5M equity, $45M credit) led by Congruent Ventures, and acquired Starlight Engines to vertically integrate solid-metal propulsion. The funding supports constellation scaling, component manufacturing, automated operations platforms, and global ground station expansion.