esa: 38 years today since ESA began operating! http://on.fb.me/12m1Hwb38歳。人間臭い年齢だ。GRAIL_101: #GRAIL Mission solves 50-year old Mystery of Lunar Surface Gravity - http://bit.ly/UGeSBx 昨日からGRAIL系ツイート多いんだけど解析結果で…