the heat generates plasma out of gases surrounding the ship, which prevents EM wave transmission. https://www.colorado.edu/lab/ngpdl/research/hypersonics/radio

the heat generates plasma out of gases surrounding the ship, which prevents EM wave transmission. https://www.colorado.edu/lab/ngpdl/research/hypersonics/radio-communications-blackout https://www.colorado.edu/lab/ngpdl/research/hypersonics/radi...