Black holes are not just cosmic vacuums; they are the ultimate laboratories for testing the limits of our physical theories.
荣枯互为倚伏,心田开合一切由己,顺与逆顺其自然,何必去问别人?长与短,四时运行,长寿或短命,一切都是自然而成,何必去怪别人。
"In the end, we will remember not the words of our enemies, but the silence of our friends."