NASA pushes back its latest flying saucer test NASA's not having an easy time testing the Low-Density Supersonic Decelerator that should eventually put big payloads on Mars. The agency has scrubbed all test flights this weekend due to weat…

Carl Sagan's solar spacecraft finally deploys its sails 星のこども: カール・セーガン博士と宇宙のふしぎ (絵本地球ライブラリー)posted with amazlet at 15.06.07ステファニー・ロス シソン 小峰書店 売り上げランキング: 55,467Amazon.co.jpで詳細を見…