2025年10月2日
夜幕下的冥王星
影像提供: NASA, Johns Hopkins Univ./APL, Southwest Research Institute
说明: 冥王星的夜面展现出这片阴影景象。从令人惊叹的太空视角看，太阳位于这颗昏暗遥远世界的后方49亿公里（近4.5光时）。这幅影像是由新视野号在2015年7月所拍摄的，当时新视野号探测器距离冥王星约21,000公里。这是在最接近冥王星的19分钟后拍摄的。这张照片以戏剧性的轮廓展现了柯伊伯带的居民冥王星，也揭示了冥王星稀薄而复杂得令人惊讶的朦胧大气层。在影像的上方，弦月状的暮光景观包括现正式命名为斯普特尼克平原的南部氮冰平原，以及诺尔盖山脉中的崎岖水冰山脉。
明日的图片: Pandora’s cluster
Due to the lapse in federal government funding, NASA is not updating APOD website. We sincerely regret this inconvenience.
由于美国联邦政府资金中断，NASA目前暂停更新APOD网站。对此带来的不便，我们深感抱歉。
英文原文:
Explanation: The night side of Pluto spans this shadowy scene . In the stunning spacebased perspective, the Sun is 4.9 billion kilometers (almost 4.5 light-hours) behind the dim and distant world. It was captured by far flung New Horizons in July of 2015 when the spacecraft was at a range of some 21,000 kilometers from Pluto. That was about 19 minutes after its closest approach. A denizen of the Kuiper Belt in dramatic silhouette, the image also reveals Pluto’s tenuous, surprisingly complex layers of hazy atmosphere. Near the top of the frame the crescent twilight landscape includes southern areas of nitrogen ice plains now formally known as Sputnik Planitia and rugged mountains of water-ice in the Norgay Montes.
