Humans have now had rovers active on Mars for almost two full decades, which is enough time that we’ve learned plenty about the Martian landscape. We know all about the soil, the geography, and even the places where water most likely flowed free on the surface of the red planet at one time, but we still don’t know everything. One place in particular, in the souther hemisphere of Mars, is giving scientists some serious grief. It’s a massive pit, and nobody knows how it got there.人類已經有火星在火星上活躍了將近兩十年，這足以讓我們學到關於火星風景的足夠時間。我們知道一切關於土壤，地理位置，甚至水最容易在紅色星球表面上自由流動的地方，但我們仍然不知道一切 。 一個地方，特別是在火星的南半球，正在給科學家一些嚴重的悲傷。這是一個巨大的坑，沒有人知道它是如何到達的。
Located in an area of the planet nicknamed “Swiss Cheese” thanks to its pockmarked ice fields — made of carbon dioxide, not H2O — the pit is confusing for a couple of reasons. For one, it doesn’t show the telltale signs of being caused by an impact, and there isn’t a well-defined debris field. If it is indeed a crater caused by an asteroid striking the planet, much of its character has long since worn away.
The other theory on the table is that it could be simply a recess in the terrain caused by a collapse underneath. If that’s the case, the cause could be any number of things, including flowing water or even lava. Such a determination would likely need to be made by studying the feature close-up, but unfortunately the rovers currently cruising around the planet aren’t exactly in a position to make an impromptu visit.
For now, the mysterious pit will remain an anomaly, and we’ll all be left wondering if it’s just a run-of-the-mill geographical quirk, or if a race of gigantic space worms once roamed the red planet.
位於一個名為“瑞士奶酪”的地球，由於其二氧化碳，而不是二氧化碳，因為有幾個原因，這個坑是令人困惑的。 一方面，它並沒有顯示出由於影響造成的跡象，也沒有明確的碎片場。 如果確實是由小行星撞擊地球造成的火山口，它的大部分角色早已磨損了。 桌面上的另一個理論是，它可能只是由下面的崩潰引起的地形的一個凹陷。 如果是這種情況，原因可能是任何數量的事情，包括流水甚至熔岩。 這樣的決定可能需要通過研究特徵特寫來做，但不幸的是，目前正在全球巡航的流浪者並不完全能夠進行即興訪問。 現在，這個神秘的坑將仍然是一個異常現象，我們都會懷疑，如果它只是一個磨合的地理怪癖，或者如果巨大的太空蠕蟲的種族曾經漫遊在紅色的星球上。
| 
雷达卡
發表於 2017-6-8 08:12:00
置顶卡
喧嚣卡
变色卡
显身卡