推荐回答（4个）
因为光线比较弱，虽然有时晚上很平静，高空的空气其实也在急速流动！因为星星的位置与你很远！但又没有变化，可以基本忽略(相比光年光速，速度差不多)所以物理界，能观测到红点，那已经是非常高兴了(非常好的)
所以你就能看到星星，很多个星星！有的时候可能一眨一眨的，那是因为空气流动，而产生的！空气的压力非常大的，几乎可以压倒一个人(比这个还历害)表现在地球上的空气，单纯的流动不会眨眼。必须有折射才可以！空气的流动和折射，才会有一眨一眨的小星星啊！星星估计都有几十亿光年的，寿命了吧？
其实很简单，光线太强了，所以，我们看不见星星那微弱的而又遥远的光啊。 打个比方吧，看见过医院的手术室么？ 我打赌您不是太愿意看见的吧？ 但是，您有没有见到过手术室台子上的那个灯啊？ 那盏手术灯实际上是有多个灯泡组成的，也就是由多个光源组成的。多个强光源相互影响造成了医生手术时就看不到自己的身影了。这样对手术有好处的。医生就不会找不到血管和一些红色但在暗处表现为黑色的东西了。 太阳就是那个多个强光源组成的一个离我们近且超强的大光源啊。所以，遥远而又相当于一个强光源的星星自然就比不上太阳的光线了。星星自然在白天无法造成对你的影响。你自然受到太阳的影响最大，当然就会忽视和感觉不到星星的存在了。但，看不到并不意味着它就不存在啊！
在你晚上感到很平静的夜晚，高空的空气其实也在急速流动，空气作为一种介质，就像水似的，光线穿过其中会有折射现象的发生。如果没有折射，单纯的流动不会发生眨眼，因为光线可以穿透空气；如果没有流动，单纯的折射也不会引起视觉上的差别，因为星星位置与你的位置相对并没什么变化，或者即使变化基本可以忽略（相比光速，宏观物体的运动速度再快也可以忽略了，所以物理界中能观测到个红移就很高兴了。）
所以，在你晚上看到星星眨眼了，只是介质的流动所致，表现在地球上就是空气，空气的流动和对光线的折射性导致了光线的闪烁即“星星眨眼”
阁下花费这么分为了探讨科普知识，好学可嘉啊！
上学时代，建议广泛拓展兴趣，浏览各种有益书籍，如果是高中以下建议自然科学类，文史类，另外，劳逸结合，拓展体育兴趣以有益身体。如果是大学了，可考虑把哲学类加进去。
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