NASA Astronaut Chris Cassidy will hang out with his Russian counterparts on their end of the International Space Station this weekend to allow NASA to run tests on a small leak first detected almost one year ago. The U.S. space agency announced the space station shuffle Thursday in a news release. Cassidy and Russian cosmonauts Ivan Vagner and Anatoly Ivanishin are not in any danger, NASA assured, and will have plenty of room in the Russian module. The International Space Station (Image credit: NASA) (WKMG 2020)With this weekend’s test, NASA officials hope to determine which module is experiencing a higher-than-normal leak rate and have preliminary results by the end of next week. In October, SpaceX will send up three NASA astronauts and a Japanese astronaut in the first operational mission for the Crew Dragon spacecraft.