It was fortuitous that one of these intervals happened to occur so soon after Charon 's discovery .
It was very lucky that one of these intervals happened to occur so soon after Charon 's discovery .
It was very lucky that one of these intervals happened to occur so soon after Charon 's discovery .
이해하기 쉽게 해주세요: It was fortuitous that one of these intervals happened to occur so soon after Charon 's discovery . 산출: