Newly Renamed Swift Mission Catches a Comet Slowdown (video) NASA/Goddard Space Flight Center Share Print E-Mail Loading video... Caption NASA's Swift satellite detected an unprecedented slowdown in the rotation of comet 41P/Tuttle-Giacobini-Kresák when it passed nearest to Earth in early 2017. Watch to learn more. Download in HD: https://svs.gsfc.nasa.gov/12808 Credit NASA's Goddard Space Flight Center Usage Restrictions None Share Print E-Mail 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.