In this task, given a sentence in the Japanese language, your task is to convert it into the English language.

「それは間違いなく、自然な隕石だ」とNASAの流星環境事務所の天文学者であるビル・クックは述べた。
"It's a natural meteor, definitely," said Bill Cooke, an astronomer at NASA's Meteoroid Environment Office.