During a 2005 Space Shuttle mission (STS-114), NASA discovered two small gap fillers sticking out between the heat shield tiles. In this video, Nicole Sharp and Dianna Cowern (Physics Girl) explain the physics of why such small objects could have a huge impact during re-entry. Watch Dianna's video: https://www.youtube.com/watch?v=akjQbPKKD7I -------------- Follow FYFD on: Tumblr: http://fyfluiddynamics.com/ Twitter: http://twitter.com/fyfluiddynamics Thanks to my Patreon patrons and FYFD supporters who help make FYFD and FYFD video possible! Patreon: http://patreon.com/FYFD FYFD Supporters: http://fyfluiddynamics.com/supporters ------------ Space Shuttle and ISS mission footage courtesy of NASA. Boundary layer transition flow visualization courtesy of Y. Kohama. Special thanks to: Dianna Cowern Yu Fukunishi Yasuaki Kohama NASA Sheva Moore William Saric ---------- FYFD video is written and hosted by Nicole Sharp, Ph.D.