droneIntroText top-level property

Implementation

String droneIntroText =
    'The Mars Helicopter, Ingenuity, is strapped to the Mars Perseverance rover\'s belly. It is powered by solar panels that charge lithium-ion batteries, providing enough energy for one 90-second flight per Martian day. On April 19, 2021, NASA\'s Ingenuity Mars Helicopter made history when it completed the first powered, controlled flight on the Red Planet. It flew for the last time on January 18, 2024.';