Have you ever gazed up at the night sky and wondered about the distances to the stars and galaxies? Imagine a galaxy so far away that its light took 25,000 years to reach us. How far do you think it is? 25,000 light years? That's what you might expect. But what if I told you that the galaxy is actually 32 billion light years away? Confused? Let's dive into the fascinating world of cosmic expansion.
宇宙的奥秘总是令人着迷，尤其是当我们尝试理解那些看似不可能的现象时。比如，想象一下，有一个星系，它的光线需要25,000年才能到达我们这里。那么，这个星系距离我们有多远？你可能会想，它是25,000光年远。这个答案是对的。但是，当我们把时间尺度放大到13.4亿年时，情况就变得有趣了。