The stars near the galactic center are like cosmic clocks, helping us map spacetime.
Sometimes you just have to pick yourself up and carry on.
美始于你决定做自己的那一刻。
海洋不仅是一种资源;它是我们必须为子孙后代承担的责任。
The brain is a complex system, and we are just beginning to understand how it works.
Every challenge is an opportunity in disguise.