奥林匹斯山：太阳系最大的火山
(原标题: Olympus Mons: Largest Volcano in the Solar System)
2023-04-04
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太阳系中最大的火山在火星上。尽管奥林匹斯山比地球上的珠穆朗玛峰高出三倍，但由于火山的斜坡较浅，加上火星的重力较低，人类攀登奥林匹斯山并不困难。奥林匹斯山的面积比整个夏威夷火山链还要大，它的斜坡每次只上升几度。奥林匹斯山是一座巨大的盾状火山，是很久以前由熔岩形成的。相对静止的地表地壳使它随着时间的推移而形成。它的最后一次喷发被认为是在2500万年前。这张特色图片是由欧洲航天局的火星快车机器人飞船拍摄的，目前它正在绕着这颗红色星球运行。你的天空惊喜：APOD在你的生日上展示了什么照片？(1995后)
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The largest volcano in our Solar System is on Mars. Although three times higher than Earth's Mount Everest, Olympus Mons will not be difficult for humans to climb because of the volcano's shallow slopes and Mars' low gravity. Covering an area greater than the entire Hawaiian volcano chain, the slopes of Olympus Mons typically rise only a few degrees at a time. Olympus Mons is an immense shield volcano, built long ago by fluid lava. A relatively static surface crust allowed it to build up over time. Its last eruption is thought to have been about 25 million years ago. The featured image was taken by the European Space Agency's robotic Mars Express spacecraft currently orbiting the Red Planet. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)