The fourth cargo resupply mission to the International Space Station by SpaceX is to take place in August. A Dragon spacecraft launching on a Falcon 9 rocket, both built by the Hawthorne, Calif., aerospace company, will be loaded with experiments, supplies and equipment for the crew of the station.
The Dragon also will carry the RapidScat instrument which will be mounted to the station and take readings of the ocean surface winds on Earth. The Dragon performing the third cargo mission to the station remains connected to the Harmony module as astronauts unload the fresh supplies and equipment and fill it with spent experiments and other things they don’t need anymore. The uncrewed Dragon is to return to Earth and parachute into the Pacific Ocean off California later this month.