SpaceX rocket created 900-km wide hole in Earth's ionosphere
Researchers have revealed that Elon Musk-led startup SpaceX's Falcon 9 rocket launched last year created a 900-km wide hole in the Earth's ionosphere which lasted for about three hours. They claimed it was caused by circular shock acoustic waves (SAWs) due to the rocket's nearly vertical trajectory. The launch probably caused a 1-metre error in GPS navigation programmes, researchers said.