最終更新日:2022/12/24

The spacecraft’s navigators have worked out a trajectory that would take it to the asteroid Apophis in April 2029, just after that object, a bit smaller than Bennu, zips within an uncomfortably close but still safe 20,000 miles from Earth.

音声機能が動作しない場合はこちらをご確認ください
編集履歴(0)

Sentence quizzes to help you learn to read

編集履歴(0)

ログイン / 新規登録

 

アプリをダウンロード!
DiQt

DiQt(ディクト)

無料

★★★★★★★★★★