2022年1月23日

这张图片显示了土星，土星环几乎已侧面展示，土星环在行星表面的阴影，以及土星的冰卫星土卫三。这张图片是由卡西尼号在2005年拍摄的。更多详细信息，请参阅说明。

Saturn, Tethys, Rings, and Shadows
Image Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA

Explanation: Seen from ice moon Tethys, rings and shadows would display fantastic views of the Saturnian system. Haven’t dropped in on Tethys lately? Then this gorgeous ringscape from the Cassini spacecraft will have to do for now. Caught in sunlight just below and left of picture center in 2005, Tethys itself is about 1,000 kilometers in diameter and orbits not quite five saturn-radii from the center of the gas giant planet. At that distance (around 300,000 kilometers) it is well outside Saturn’s main bright rings, but Tethys is still one of five major moons that find themselves within the boundaries of the faint and tenuous outer E ring. Discovered in the 1980s, two very small moons Telesto and Calypso are locked in stable along Tethys’ orbit. Telesto precedes and Calypso follows Tethys as the trio circles Saturn.

Tomorrow’s picture: witch star?

土星、土卫三、行星环及暗影
影像提供: Cassini Imaging Team, SSI, JPL, ESA, NASA

说明: 从冰卫星土卫三看出去，土星环及其暗影交织出如梦似幻的土星系统景观。你最近没去土卫三吗？那么这幅由卡西尼号太空船所拍摄的壮丽环系影像，可拿来暂解渴望。在这幅摄于2005的影像里，中下方沐浴在阳光里、直径约1,000公里的土卫三，与土星这颗气态巨行星的中心相隔不到5个土星半径。依此间距（约300,000公里）来说，它位在土星主要亮环的外头，但仍是在暗淡稀薄E环内运行的5颗大卫星之一。在1980年代找到的二颗小卫星：土卫十三和土卫十四，则被锁在土卫三轨道的特定稳定位置上；土卫十三运行在土卫三前头，而土卫十四则堕后尾随，三者共轨绕行土星。 (Tethys 土卫三; Telesto 土卫十三; Calypso 土卫十四)

明日的图片: witch star?

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HH 30: 有形成中行星的恒星系统

HH 30: 有形成中行星的恒星系统

作者Samuel Chan

A dark field has a single, colorful, blurry structure in its center. Red-colored jets extend out from the center toward the top and bottom of the frame. A dark disk covers the center. Blue outflows appear on both sides of the horizontal disk. To the lower left, a larger blue outflow extends. Please see the explanation for more detailed information.
暗场中央有一个单一的、色彩鲜艳的模糊结构。红色喷流从中心向画面的顶部和底部延伸。一个暗盘覆盖了中心。水平盘的两侧出现蓝色外流。在左下方，有一个更大的蓝色外流延伸。有关更多详细的信息，请参阅说明。

雷神的头盔与海鸥

雷神的头盔与海鸥

作者Samuel Chan

A tall starscape appears to have two bright nebulas. The large one at the top is colored mostly red and is known as the Seagull Nebula. The small one near the bottom right is known as Thor’s Helmet. Please see the explanation for more detailed information.
一片高耸的星空中似乎有两个明亮的星云。顶部较大的星云主要呈红色，被称为海鸥星云。靠近右下方的小星云被称为雷神的头盔。有关更多详细信息，请参阅说明。

加州上空的景观：太空探索技术公司火箭发射的羽状烟尘

加州上空的景观：太空探索技术公司火箭发射的羽状烟尘

作者Samuel Chan

Houses are seen on a street below the night sky. In the sky is a bright light plume that looks like the outline of a giant fish. Please see the explanation for more detailed information.
夜空下，街道上的房子随处可见。天空中有一束明亮的光柱，看起来像一条巨鱼的轮廓。有关更多详细信息，请参阅说明。

2条评论

  2. Neben der Überraschung dachte ich an die große Cassini. Spüren Sie die schockierende Schönheit des Universums und die Freundlichkeit zwischen dem Planeten und uns. Die Liebe des Universums kam plötzlich in mein Herz.

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