In another setback for the United States in the space race against China, NASA has canceled its rover mission VIPER. The plan was to send VIPER to the far side of the moon with a spacecraft from Pittsburgh-based start-up Astrobotic. However, Astrobotic failed in its first landing attempt at the start of the year. The next mission, which was to have Viper on board, has been postponed until at least 2025. Although NASA has already invested around 450 million dollars in the rover, it has now decided not to wait any longer for cost reasons.