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原文:
A 50 mile (80 kilometer) trip across Pluto would cover the distance indicated by the scale bar in this startling image. The close-up of the icy world’s rugged equatorial terrain was captured when the New Horizons spacecraft was about 47,800 miles (77,000 kilometers) from the surface, 1.5 hours before its closest approach. Rising to an estimated 11,000 feet (3,500 meters) the mountains are likely composed of water ice. Suggesting surprising geological activity, they are also likely young with an estimated age of 100 million years or so based on the apparent absence of craters. The region pictured is near the base of Pluto’s broad, bright, heart-shaped feature.
中文翻譯:
一個50英里（80公里）的旅程穿越冥王星，就如這幅驚人的影像中所顯示的比例尺那樣。這幅俯瞰這顆冰冷世界崎嶇赤道地貌的特寫照片是由新視野號（New Horizons）太空船在距離表面約47,800英里（77,000公里）的時候拍攝的，距離最近接觸時間僅1.5小時。這些高達約11,000英尺（3,500米）的山脈可能由水冰組成。由於表面幾乎沒有隕石坑，這些山脈暗示了驚人的地質活動，估計年齡約為1億年，表明它們相對年輕。所描繪的區域位於冥王星那個寬闊而明亮的心形特徵的底部。
#冥王星 #NewHorizons #地質活動 #水冰 #宇宙探索 #天文學 #太空科學
來源:NASA每日圖片
