Secondly, even though other objects are visible at this distance, according to Shuttle astronaut Jay Apt, the Great Wall is barely discernable, if not invisible.
其次，根据航天飞机宇航员杰伊·阿普特的说法，在这个距离能看到其他物体，不能说看不到长城，但是只能勉强辨别出来。
Comet Hartley 2, visible on the right, is now fading but still discernable to northern observers with binoculars.
在图中右边可以看见哈雷彗星2号，它现在正在离我们远去，不过北半球的天文观察者还是可以通过双筒望远镜看到它。
Comet Hartley 2, visible on the right, is now fading but still discernable to northern observers with binoculars.
在图中右边可以看见哈雷彗星2号，它现在正在离我们远去，不过北半球的天文观察者还是可以通过双筒望远镜看到它。
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