comet

天文·每日一图

彗星莱蒙的离子尾巴变化

A comet with a green head at the bottom and a complex tail extending toward the top is shown, horizontally side by side, five times. Please see the explanation for more detailed information.
一颗彗星,底部呈绿色,顶部有一条复杂的彗尾,水平并排五次出现。有关更多详细信息,请参阅说明。

天文·每日一图

彗星莱蒙增亮

A starfield is shown that has a bright comet. The comet shows a green head on the lower left and an ion tail with significant structure extending out to the upper right. Please see the explanation for more detailed information.
图中显示的星场中有一颗明亮的彗星。彗星的左下方有一个绿色的彗核,右上方则延伸出一条带有显著结构的离子尾。有关更多详细信息,请参阅说明。

天文·每日一图

新彗星SWAN25B现身墨西哥上空

A starfield is seen above a horizon and an orange sunset. In the starfield, near the horizon, is a comet with a green head and long tail. Please see the explanation for more detailed information.
地平线和橙色夕阳之上,星空清晰可见。星空之中,靠近地平线的地方,有一颗彗星,头部呈绿色,彗尾很长。有关更多详细信息,请参阅说明。

天文·每日一图

星际彗星3I/ATLAS

A drawing of our Solar System shows the orbits of Jupiter and interior planets. A white line shows the trajectory of passing comet 3I/ATLAS. Please see the explanation for more detailed information.
这张太阳系图展示了木星和内部行星的轨道。白线表示彗星3I/ATLAS的轨迹。有关更多详细信息,请参阅说明。

天文·每日一图

2025史旺彗星

See Explanation. Clicking on the picture will download the highest resolution version available.
请参阅说明。单击图片将下载可用的最高分辨率版本。

天文·每日一图

NGC 772: 蕨菜星系

A dark field is filled with stars and galaxies. A large spiral galaxy appears on the upper left. Toward the right, there is a smaller fuzzy patch that is a comet with a short tail. Please see the explanation for more detailed information.
一片黑暗的星空中布满了恒星和星系。左上方出现一个巨大的螺旋星系,向右侧望去,有一个较小的模糊斑点,那是一颗彗尾较短的彗星。有关更多详细信息,请参阅说明。

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