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彗星和螃蟹

(原标题: A Comet and a Crab)

2021-10-22

浏览次数: 37

这个美丽的视野跨越了2度或4个满月的天空,充满了朝向金牛座的星星。在画面中央的上方和右侧,你可以看到模糊的淡红色的梅西耶1 (M1),也被称为蟹状星云。M1是18世纪彗星猎人查尔斯·梅西耶著名的非彗星目录中的第一颗天体。根据10月11日拍摄的图像数据,照片中有一颗彗星。中间和左边下方是周期性彗星67P丘留莫夫-格拉西门科(也被称为罗塞塔彗星)暗淡的绿色彗发和布满灰尘的彗尾。在21世纪,它成为了地球上机器人的最后安息之地。罗塞塔号上的彗星现在正在返回太阳系内部,将于11月2日到达它的下一个近日点或最接近太阳的地方。这颗彗星太过微弱,无法单凭肉眼看到,它下一次接近地球的近地点将是11月12日。

查看原文解释

This pretty field of view spans over 2 degrees or 4 full moons on the sky, filled with stars toward the constellation Taurus, the Bull. Above and right of center in the frame you can spot the faint fuzzy reddish appearance of Messier 1 (M1), also known as the Crab Nebula. M1 is the first object in 18th century comet hunter Charles Messier's famous catalog of things which are definitely not comets. Made from image data captured this October 11, there is a comet in the picture though. Below center and left lies the faint greenish coma and dusty tail of periodic comet 67P Churyumov-Gerasimenko, also known as Rosetta's comet. In the 21st century, it became the final resting place of robots from planet Earth. Rosetta's comet is now returning to the inner solar system, sweeping toward its next perihelion or closest approach to the Sun, on November 2. Too faint to be seen by eye alone, the comet's next perigee or closest approach to Earth will be November 12.

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