Arsia Mons, one of the Red Planet’s largest volcanoes, peeks through a blanket of water ice clouds in this image captured by NASA’s 2001 Mars Odyssey orbiter on May 2, 2025. Odyssey used a camera called the Thermal Emission Imaging System (THEMIS) to capture this view while studying the Martian atmosphere, which appears here as a greenish haze above the scene. A large crater known as a caldera, produced by massive volcanic explosions and collapse, is located at the summit. At 72 miles (120 kilometers) wide, the Arsia Mons summit caldera is larger than many volcanoes on Earth.
Learn more about Arsia Mons and Mars Odyssey.
Image Credit: NASA/JPL-Caltech/ASU
这张图像由NASA的2001火星奥德赛号轨道器于2025年5月2日拍摄，展示了火星上最大火山之一——阿尔西亚山（Arsia Mons）透过一层水冰云雾若隐若现的壮丽景象。奥德赛号使用其热辐射成像系统（THEMIS）摄像机拍下了这一画面，同时也在研究火星大气层，图中呈现为笼罩在景色上方的绿色薄雾。
阿尔西亚山山顶坐落着一个巨大的火山口（称为“破火山口”），这是由剧烈的火山爆发与随后的坍塌所形成的。该山顶破火山口宽达72英里（120公里），比地球上的许多火山整体规模还要庞大。
图片来源: NASA/JPL-Caltech/ASU
