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中文翻譯:
探索小行星帶中最大的天體——Ceres，NASA已派出機器人探測器Dawn進行探索和地圖繪製。Ceres是個直徑達1,000公里的世界，正式被分類為矮行星，卻從未有詳細影像來揭示它的奧秘。這裡是一段一週前拍攝的20幀影片，展示了Dawn接近的過程，該影片媲美哈勃太空望遠鏡拍攝的最佳影像。透過這段影片，我們可以清晰地辨識Ceres的9小時自轉週期。Dawn定於三月初到達Ceres，將匹配速度並嘗試進入這個未曾探索的天體軌道，拍攝影像和數據，幫助人類更深入了解Ceres的性質和歷史，以及整個太陽系的早期歷史。
#Ceres #NASA #DawnSpacecraft #AsteroidBelt #DwarfPlanet #SpaceExploration #SolarSystem #宇宙探索
原文:
It is the largest asteroid in the asteroid belt — what secrets does it hold? To find out, NASA has sent the robotic Dawn spacecraft to explore and map this cryptic 1,000-kilometer wide world: Ceres. Orbiting between Mars and Jupiter, Ceres is officially categorized as a dwarf planet but has never been imaged in detail. Featured here is a 20-frame video taken a week ago of Dawn’s approach that now rivals even the best images of Ceres ever taken by the Hubble Space Telescope. The video shows enough surface definition to discern its 9-hour rotation period. On target to reach Ceres in early March, Dawn will match speeds and attempt to orbit this previously unexplored body, taking images and data that may help humanity better understand not only the nature and history of Ceres but also the early history of our entire Solar System.
來源:NASA每日圖片
