Switchbacks Flythrough (VIDEO) Imperial College London This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Parker Solar Probe flew through several 'switchbacks' -- tubes of fast solar wind emerging from coronal holes in the sun's upper atmosphere. Credit NASA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.