向外星智能传递信息

与外星智慧生物通信协议

A Protocol for Messaging to Extraterrestrial Intelligence

向地外文明传递信息（METI）是一个研究分支，涉及向可居住的行星构建和广播信息。自1974年的阿雷西博信息以来，METI的少数广播内容和复杂性都有所增加，但缺乏既定的协议产生了难以解释的无组织或神秘的信息。在这里，我们概述了一个自洽的协议，为信息的建设，以最大限度地提高信息有效地沟通的可能性，提供了约束和指导方针的信息，以外星智慧的消息的发展。METI协议考虑几个因素，包括信号编码、消息长度、信息内容、信息中心主义、传输方法和传输周期。一旦开发完成，该协议将被发布，用于在全球不同人群和跨文化界限的测试。向外星人发出的有效信息至少应该是人类可以理解的，发布协议进行测试将使我们能够改进协议并开发潜在的信息。通过一个互动网站，世界各地的用户将能够创建和交换符合协议的信息，以发现更适合跨文化交流的信息类型。METI协议的制定将有助于提高向外星人发送信息的质量，促进国际合作，并将天体生物学扩展到公众。

引入系外行星逃逸因子与鱼缸世界（两种用于搜寻地外文明的概念工具）

Introducing the Exoplanet Escape Factor and the Fishbowl Worlds (Two conceptual tools for the search of extra terrestrial civilizations)

该研究为地外文明搜寻提出“系外行星逃逸因子”和“鱼缸世界”两个概念工具，用以界定地外文明开展星际探索的可能性，指出部分文明或因物理限制永远无法离开母星。

Search for Terrestrial Intelligence

The existence of intelligent extraterrestrial life forms among the thousands of billions of galaxies that dance in the Universe is beyond doubt. Meeting with one of them is only a matter of time. SETI (Search for Extraterrestrial Intelligence) has been searching for them for only half a century. However, the crucial question today is whether we will have time to establish contact given the multiple threats that humanity puts on itself. Therefore, it seems urgent to launch a program complementary to SETI which could be called STI (Search for Terrestrial Intelligence).

Estimating survival probability using the terrestrial extinction history for the search for extraterrestrial life

Several exoplanets have been discovered to date, and the next step is the search for extraterrestrial life. However, it is difficult to estimate the number of life-bearing exoplanets because our only template is based on life on Earth. In this paper, a new approach is introduced to estimate the probability that life on Earth has survived from birth to the present based on its terrestrial extinction history. A histogram of the extinction intensity during the Phanerozoic Eon is modeled effectively with a log-normal function, supporting the idea that terrestrial extinction is a random multiplicat…

A Quantitative Assessment of Communicating Extra-Terrestrial Intelligent Civilizations in the Galaxy and the Case of FRB-like Signals

A formula is proposed to quantitatively estimate the signal emission rate of Communicating Extra-Terrestrial Intelligent civilizations (CETIs) in the Galaxy. I suggest that one possible type of CETI signal would be brief radio bursts similar to fast radio bursts (FRBs). A dedicated search for FRB-like artificial signals in the Galaxy for decades may pose a meaningful upper limit on the emission rate of these signals by CETIs. The Fermi-Hart paradox is answered in terms of not having enough observing times for this and other types of signals. Whether humans should send FRB-like signals in the f…

Extremophiles: a special or general case in the search for extra-terrestrial life?

Since time immemorial life has been viewed as being fragile, yet over the past few decades it has been found that many extreme environments are inhabited by organisms known as extremophiles.Knowledge of their emergence, adaptability, and limitations seems to provide a guideline for the search of extra-terrestrial life, since some extremophiles presumably can survive in extreme environments such as Mars, Europa, and Enceladus. Due to physicochemical constraints, the first life necessarily came into existence at the lower limit of lifes conceivable complexity.Thus, the first life could not have …