马卡莱恩星系链的双眼
图为两个大星系。左边是一个扭曲的螺旋星系，而右边是一个相对没有特征的黄色盘状星系。在某些人看来，这些星系合在一起就像一双眼睛。有关更多详细信息，请参阅说明。
月之眼
2020年12月02日 Eye of Moon Image Credit & Copyright: Zachery Cooley Explanation: Who’s watching who? The featured image of the Moon through a gap in a wall of rock may appear like a giant eye looking back at you. Although, in late October, it took only a single exposure to capture this visual double, it also took a lot of planning. The photographic goal was achieved by precise timing — needed for a nearly full moon to appear through the eye-shaped arch, by precise locating — needed for the angular size of the Moon to fit iconically inside the rock arch, and by good luck — needed for a clear sky and for the entire scheme to work. The seemingly coincidental juxtaposition was actually engineered with…