Last Updated：2025/11/22
Astronomers calculated the column density along several lines of sight to estimate how much gas and dust lies between Earth and distant quasars.
See correct answer
Astronomers calculated the column density along several lines of sight to estimate how much gas and dust lies between Earth and distant quasars.
音声機能が動作しない場合はこちらをご確認ください
Edit Histories（0）
