NASA is counting on Falcon 9s to launch a Northrop Grumman Cygnus supply ship to the International Space Station on Aug. 3, followed by a SpaceX Crew Dragon flight to carry three agency astronauts and a Russian cosmonaut to the lab around Aug. 18. SpaceX successfully launched three Falcon 9 rockets in rapid-fire fashion over the weekend, putting 67 Starlink satellites into orbit within three days of winning approval from the Federal Aviation Administration to resume launchings in the wake of a rare in-flight failure on July 11. Are space misssions really helpful to humanity ?