Engineers at the Massachusetts Institute of Technology (MIT) said they have successfully flown the first-ever "solid state" airplane that has no moving parts and does not rely on fossil fuels to fly.
원문출처 : https://www.cnn.com/travel/article/mit-ion-plane-intl/index.html
원문출처 : https://www.cnn.com/travel/article/mit-ion-plane-intl/index.html