Talk Review
宇宙的行星 宇宙的生命
Talk Review
Source: 中文大學柳愛華紀念講座
This talk is about whether there is life in universe other than Earth, for example, it talks about the chance of life occurred in Mars. It also talks about the history of Gallery. After the big bang, many separated masses are formed and they both interacted with each other by gravitational force. Due to gravity, the planet can attract the gas particles to form a layer of atmosphere. Different planets due to different elements allocated after the big bang can also find different climate. Although the scientists found that there is no life in solar planets other than Earth, it cannot conclude that there is no life in the whole universe. The professor mentioned that the universe is expanding; there is millions of galaxy like milky galaxy. He brought about a question. ’Is it possible to communicate with aliens from other planets?’ he then used a lot of mathematics to illustrate the probability to communicate with the aliens. The probability is very small because it takes millions of light years for the message transmission. But this question motivates scientists to do researches on alien communication. After this talk, I start to think about the origin of life. If there is a planet having same climate like Earth, does it mean we can find life there? Where do life come from? It may require scientists to investigate this question.
By Anita Fung
