雪崩、冰爆和沙丘: NASA正在追踪火星上的新年
在地球上，新年往往伴随着冬日的奇幻美景，而火星北半球则经历着一种活跃甚至是“爆炸式”的春季解冻。当我们在地球迎接即将到来的跨年夜时，火星科学家已经抢先了一步：火星在2024年11月12日完成了绕太阳的一次公转。为此，一些研究人员为这个“火星新年”举杯庆祝。
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火星勘测轨道飞行器
NASA·每日一图
HIRISE发现火星陨石坑沉积物
This image taken by the Mars Reconnaissance Orbiter spacecraft’s HIRISE instrument on Oct. 23, 2022, of the northern plains of Arabia Terra shows craters that contain curious deposits with mysterious shapes and distribution. For instance, the deposits are located on the south sides of the craters, b
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洞察号“鼹鼠”热探测器，结束了它的火星之旅
在这张NASA洞察号着陆器位于火星表面的示意图中，可以看到下方的火星地下结构层次，背景中则可以看到可怕的沙尘。 图片来源：巴黎地球物理研究所/尼古拉斯·萨特（Nicolas Sarter） 热探针始终无法获得挖掘所需的摩擦力，而该任务也已获得进一步指示，可以继续进行其他的科学工作了。 由德国航空航天中心（German Aerospace Center，DLR）开发和制造，美国航空航天局（NASA）洞察号（InSight）着陆器所部署在火星上的热探针，已经结束了它的相关任务。自2019年2月28日以来，这一名为“鼹鼠”（mole）的热探测器就一直在尝试深入火星表面之下，希望能测得火星的内部温度，
NASA·每日一图
一块极地夹心蛋糕
The Martian ice cap is like a cake with every layer telling a story. In this case, the story is one of climate change on Mars. This image of an exposed section of the north polar layered deposits (NPLD) looks much like a delicious slice of layered tiramisu. The NPLD is made up of water-ice and dust
NASA·每日一图
火星上的沟壑
Gullies on Mars form during the winter, fluidized by carbon dioxide frost, and scientists monitor sites on the planet for activity throughout the year. In this mid-winter scene, a Martian gully is almost completely frosted over the pole-facing slope within the shadow. The map is projected here at a
NASA·每日一图
达尼埃尔森陨石坑的岩层
This image taken by the Mars Reconnaissance Orbiter spacecraft shows sedimentary rock and sand within Danielson Crater, an impact crater about 42 miles or 67 kilometers in diameter, located in the southwest Arabia Terra region of Mars. The rock was formed millions or billions of years ago when loose