彗星ZTF和火星
(原标题: Comet ZTF and Mars)
2023-02-13
浏览次数: 19
不，ZTF彗星不会撞击火星。C/2022 E3 （ZTF）因其明亮的绿色彗发而被称为“绿色彗星”，然而，几天前，它确实几乎从这颗遥远得多的行星前面经过，与拍摄这张特写照片的时间非常接近。这两个天空的标志是在一个著名的地球标志——马特洪峰后面拍摄的，马特洪峰位于瑞士和意大利之间的阿尔卑斯山，有一个风景如画的山峰。前景和背景图像都是在同一天晚上由同一台相机在同一地点拍摄的。这颗彗星的白色尘埃尾巴在绿色彗发的右侧可见，而淡蓝色的离子尾巴则在图像的顶部。橙色的火星位于众多背景恒星以及右下方的巴纳德22暗星云的正前方。尽管在接下来的几个月里，火星仍然可以在夜空中看到，但ZTF彗星已经开始随着它返回外太阳系而褪色。彗星ZTF画廊：值得注意的提交给APOD
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No, Comet ZTF is not going to hit Mars. Nicknamed the Green Comet for its bright green coma, C/2022 E3 (ZTF) did, however, pass almost in front of the much-more distant planet a few days ago, very near in time to when the featured picture was taken. The two sky icons were here captured behind a famous Earth icon -- the Matterhorn, a mountain in the Alps between Switzerland and Italy with a picturesque peak. Both the foreground and background images were taken on the same evening by the same camera and from the same location. The comet's white dust tail is visible to the right of the green coma, while the light blue ion tail trails towards the top of the image. Orange Mars is well in front of the numerous background stars as well as the dark nebula Barnard 22 to its lower right. Although Mars remains visible in the evening sky for the next few months, Comet ZTF has already begun to fade as it returns to the outer Solar System. Comet ZTF Gallery: Notable Submissions to APOD
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