Isar Aerospace is a German aerospace company based in Munich, Germany. The company was founded in 2018. The company is named after the river that flows through Munich. The company is developing Spectrum, a two-stage, liquid-fueled rocket designed to launch 1,000 kilograms to low Earth orbit. Isar Aerospace intends to manufacture 80% of the rocket themselves, using primarily technology from the tech firms in the area surrounding Munich.