SpaceX cancels Starship rocket test flight

The US aerospace company SpaceX has canceled the eagerly awaited first test flight of its giant Starship rocket at the last minute. The reason was a technical problem with pressure equalization on the most powerful space rocket ever built, as SpaceX representatives said on Monday during the live broadcast of the planned launch. SpaceX Founder Elon Musk wrote in the short message service Twitter that apparently a valve was frozen.