The Chelyabinsk meteor mid-air explosion injured more than 1,000 people in Russia in 2013, and scientists are not ruling out such an event in the future
The primary goal of the Nightingale flyover was to collect the high-resolution imagery required to complete the spacecraft's Natural Feature Tracking image catalogue
With the launch escape demonstration now complete, the next big flight of Crew Dragon will have people on board, say NASA astronauts Bob Behnken and Doug Hurley