参考
Why Doesn't Earth Have Rings?
Using the Roche Limit to Make Earth a Ringed Planet
https://gizmodo.com/using-the-roche-limit-to-make-earth-a-ringed-planet-5931098
If Earth had Rings
What if Earth had rings?
https://www.livescience.com/what-if-earth-had-rings.html
a nifty thought experiment: the Earth with rings
http://josephshoer.com/blog/2009/11/the-rings-of-earth-part-ii-implications/
↓Twitter
https://mobile.twitter.com/rui_science
↓チャンネルメンバーシップ
https://www.youtube.com/channel/UCJHZshDuIrd_6MaT8MIjFtg/join
BGM
【東方】おてんば恋娘【自作アレンジ】
ほのぼのワルツ【リコーダー】
砕月町
ニコニ・コモンズ https://commons.nicovideo.jp/
Twitterでフォローしよう
Follow yukkuri_matome