光线不断变化，每分钟都在改变事物的氛围和美感。
The light constantly changes, and that alters the atmosphere and beauty of things every minute.
And, after all, what is a fashion? From the artistic point of view, it is usually a form of ugliness so intolerable that we have to alter it every six months.
The center of our galaxy is a fascinating place where extreme physics takes place, and it's a privilege to study it.