Key mission for Europe's commercial space enterprise scrubbed again

Isar Aerospace still commands top position among a new generation of European rocket startups, but the company's efforts to launch a critical test flight of its Spectrum rocket continue to encounter roadblocks. The latest delay came Monday, when Isar scrubbed a launch attempt after "detecting off nominal behavior in the vehicle's fluid systems," according to a social media post. "The teams are analyzing the new data to isolate the root cause." The two-stage, 92-foot-tall (28-meter) Spectrum rock