NASA Identifies Cause of Mars Helicopter’s Final Crash

NASA says it has found the likely cause of an accident that grounded its Mars helicopter Ingenuity. The experimental helicopter crash landed on the Martian surface in January. Engineers found the crash was linked to the helicopter’s navigation system.

Source : https://learningenglish.voanews.com/a/nasa-identifies-cause-of-mars-helicopter-s-final-crash/7905637.html