Edit Template

Dark Sand Cascades on Mars

Dark Sand Cascades on Mars

中文翻譯:
你有沒有想過,火星上會不會有樹呢?其實不是喔!一些暗棕色的條紋被火星偵測器拍到,這些條紋出現在覆蓋著淡淡霜層的粉紅色沙丘上。這幅圖片是在2008年4月拍攝的,當時,火星北極附近的沙丘因為春天的陽光而開始融化,使得裡面的深色沙子變得更加明顯。當這些深色的沙子在沙丘的頂部形成時,可能會像水流般滑下來,留下了黑色的表面條紋,這些條紋一開始看起來像是樹,卻沒有任何影子。這張圖片中,約25厘米大的物體在一公里的範圍內被清楚地拍攝出來。圖片的一些特寫部分顯示了正在發生的砂石滑動,就像在拍照的同時,沙子已經在滑動了呢!
原文:
Are these trees growing on Mars? No. Groups of dark brown streaks have been photographed by the Mars Reconnaissance Orbiter on melting pinkish sand dunes covered with light frost. The featured image was taken in 2008 April near the North Pole of Mars. At that time, dark sand on the interior of Martian sand dunes became more and more visible as the spring Sun melted the lighter carbon dioxide ice. When occurring near the top of a dune, dark sand may cascade down the dune leaving dark surface streaks — streaks that might appear at first to be trees standing in front of the lighter regions but cast no shadows. Objects about 25 centimeters across are resolved on this image spanning about one kilometer. Close ups of some parts of this image show billowing plumes indicating that the sand slides were occurring even while the image was being taken. Celestial Surprise: What picture did APOD feature on your birthday? (post 1995)
來源:NASA每日圖片

About

無論您是新手家長還是經驗豐富的育兒達人,這裡都有適合您的內容。我們鼓勵您分享您的經歷和建議,讓我們一起為孩子們創造更美好的成長環境!

Tags

    Recent Post

    版權所有 © 2025 親子成長智慧樹

    返回頂端