中文翻譯:
在火星上,有一個神秘的地方叫做Hebes Chasma,它是位於巨大的Valles Marineris峽谷北邊的一個凹陷區域。這個凹陷與其他表面特徵沒有連接,讓我們很難知道裡面發生了什麼事情。在Hebes Chasma內部,有一座叫做Hebes Mensa的高高的山丘,高達5公里,但看起來這座山丘好像發生了一種特殊的部分坍塌,這或許能提供一些線索。來自歐洲太空總署的火星快車探測器拍攝的圖片清晰顯示了這片峽谷及中央山丘上獨特的馬蹄形凹陷。來自山丘的物質似乎流動到了峽谷的底部,而一層可能的黑色物質則像墨水一樣流淌在下坡的地方。科學家們提出了一個假設,認為Hebes Chasma某些底層是鹽岩構成的,鹽分可能在融化的冰流中溶解,這些冰流穿過洞口流進地下水源。這個地方真是讓人感到驚奇!
原文:
What’s happened in Hebes Chasma on Mars? Hebes Chasma is a depression just north of the enormous Valles Marineris canyon. Since the depression is unconnected to other surface features, it is unclear where the internal material went. Inside Hebes Chasma is Hebes Mensa, a 5 kilometer high mesa that appears to have undergone an unusual partial collapse — a collapse that might be providing clues. The featured image, taken by ESA’s robotic Mars Express spacecraft currently orbiting Mars, shows great details of the chasm and the unusual horseshoe shaped indentation in the central mesa. Material from the mesa appears to have flowed onto the floor of the chasm, while a possible dark layer appears to have pooled like ink on a downslope landing. One hypothesis holds that salty rock composes some lower layers in Hebes Chasma, with the salt dissolving in melted ice flows that drained through holes into an underground aquifer.
來源:NASA每日圖片