Most of us learned early in school about wind resistance. The problem with when resistance is the faster you move through the air, the more resistance you create, causing thermal buildup on a surface until things typically melt or fall apart. We have seen with UFOs that this is not something that concerns them. They move about at great speeds generating little or no heat and usually no exhaust. Author Tim McMillan writing for The Debrief has written another fine article discussing aerodynamic materials that can withstand tremendous heat and you can find HERE.