地球撞上太阳还需要1千百万百万百万百万年，所以眼下没有啥好担心的！
It will take about a thousand million million million million years for the Earth to run into the sun, so there’s no immediate cause for worry!
可持续性不是一种趋势，而是我们对未来的责任。
Every discovery we make brings us one step closer to understanding the fundamental laws of the universe.
Freedom of use is the most important quality of space.