February 19, 2025
First hot-fire test of Europe’s reusable methane-fueled Prometheus rocket engine

Europe successfully completed the first hot-fire test of its reusable Prometheus rocket on June 22, a 12-second burn while integrated to the Themis first-stage demonstrator at the ArianeGroup site in Vernon, France. Prometheus and Themis are components of the new ‘Ariane Next’ European launch program, which is focused on developing a fleet of reusable rockets to enter service in the 2030s…
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