A3彗星

A starfield is shown that includes a bright comet. A bright tail points to the upper right but has an unusual dark streak in it. A thin anti-tail points toward the lower left. Please see the explanation for more detailed information.
图中显示的星空包括一颗明亮的彗星。明亮的彗尾指向右上方，但其中有一条不寻常的暗色条纹。细长的反彗尾指向左下方。有关更多详细信息，请参阅说明。