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我们现在才知道，大犬座VY不再是宇宙中已知的最大的恒星了。目前这一头衔应该属于盾牌座UY？即便如此，我还是确信在数年后再看，又会是另一个恒星。科学在变化，数据也在更新，我们无需担心这些事情。变化是一件好事，对于可观测宇宙中的星系的预估数量需要更正。在之前，我们所知的星系数量大约是2000亿个。而之前发表在《天体物理学杂志》上的一篇论文将星系数的预估数量从2000亿修正到20000亿，即扩大了10倍。2000亿都要绞尽脑汁，思考这是怎样的数量级。但20000亿，对我来说真的太难理解了。
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