← バックナンバーニュース

Did You Know? · 前へ 1 お問い合わせ.

This is how the Solar System travels around the center of the galaxy, taking 225 million to 250 million years for a full orbit.Did you know? 🎓

This is how the Solar System travels around the center of the galaxy, taking 225 million to 250 million years for a full orbit.Did you know? 🎓

This is how the Solar System travels around the center of the galaxy, taking 225 million to 250 million years for a full orbit.Did you know? 🎓

元のソースを見る

コメント

投票、保存、コメントを登録します. エントリーフォーム · 参加登録

最初のコメント