Symposium 04
Symposium 04
Symposium 04 half an hour, Sit in the first half-person high wooden high chair to the left of the podium, Doris wearing a smart nanomembrane face mask, Get up and walk slowly to the front of the podium, at this time, Nina looked at the transparent wooden rimless smart gsses, Say slowly: Is there a variety of alien life in the sor system? Doris looked at the transparent wooden rimless smart gsses, and said slowly: After 3.8 billion years of evolution, Now there are many forms of life oh, many species, However, even the simplest life oh still has requirements for the enviro, For example, they need water, anic materials and energy, Without any one factor, they may not survive, With tinuous exploration, we have learned more about the earth and other ps, half an hour, Nina looked at the transparent wooden rimless smart gsses, Slowly say: Why is life a miracle of the universe? Doris looked at the transparent wooden rimless smart gsses, and said slowly: Because of the process of life geion and evolution, there are many special ditions, If any of these ditions are missing, Then life would not be able to arise or evolve to the level it is today, The sun is suitable for the existence of life, If its mass is toe, it will burn too fast to wait for life to appear, Earth&039; s orbit is appropriate, it makes the temperature oh just right for life to exist, If Earth were in the orbit of Venus or Mars, it would be too hot or too cold for life to exist, The sun has a panion star called Nemesis, Every 26 million years or so, it collides with the Oort cloud region at the edge of the sor system, This number is very close to the cycle of mass extins oh, Mass extins oh seem to happen every 20 to 40 million years, ets from alien gaxies are the main cause of extin oh, The sor system will be bombarded by such ets, Frequent exge of material with other pary systems, Dust kicked up by et impacts be pushed by the pressure of sunlight, Flying outward at a speed of 108,000 kilometers per hour, faster than the retive velocities of two stars at close enters, This means that microbes may be able to take advantage of this process, Jumping from the sor system to another pary system passing by, The existence of life oh and the evolution of advanced life is also reted to the fact that the earth has a Jupiter, It is precisely because of Jupiter that has the rgest mass and volume that it attracts many meteorite impacts to the earth, If there is no Jupiter, the ces of Earth suffering from the same meteorite that killed the dinosaurs, It will be once every 10,000 years, then no advanced life evolve on the earth at all, The emergence of human beings is believed to be the result of a series of fortuitous events oh, We know that there have been several mass extins of life in the 4.6 billion-year history of the earth, The reason for the extin of the dinosaurs is reted to the Chikrube meteorite that hit the Yu Peninsu in Mexico. After that meteorite impact, the atmosphere was heated to temperatures that would be difficult for rge anisms to survive, And form a long-term, global severe climate, This led to the eventual extin of many anisms, including dinosaurs, due to the rupture of the food . But the milk animals were a blessing in disguise, and the earth has since had a new dire of biological evolution. This is the beginning of the Anthropoe, Even if the Anthropoe could go on forever, But the ultimate fate of humans and the p depends rgely on the sun. About 5 billion years ter, Most of the hydrogen in the sun will aggregate into helium, at this time a so-called helium fsh will occur and bee a red giant star, Its volume will increase to 100 times its inal size and engulf Mercury, Venus and Earth, This is the end of the earth... at this time, Nina looked at the transparent wooden rimless smart gsses, Said slowly: Could there be living things on Mars? Doris looked at the transparent wooden rimless smart gsses, and said slowly: Martian life should be some kind of radiation-tolerant miism, The surface of Mars is extremely harsh and dangerous for life, Sihe enviro of Mars is so harsh, it is impossible for the humanoid Martians to exist in our imagination, and even other ordinary creatures we know ot survive on it, Oh, there are also some pces where the enviro is quite harsh, but there is still life, For example, a halophilic archaea lives in the cold and highly saline enviro of Antarctica. The surface of these bacteria is covered with a hydration film, It is beneficial to resist high-salt and dry enviros, while halophilic archaea belong to extremophiles, Extremophiles are a general term for a css of miisms that are suitable for living ireme enviros. These miisms are not only resistant to cold, drought, and high salt, but also It also thrive ireme ditions such as extreme heat, high pressure, strong radiation, oxygen-free and heavy metals. Since Deinococcus radiodurans live in harsh enviros simir to those on Mars, then it should also be able to live on Mars, So if there really is life on Mars, it might be Deinococcus radiodurans, While Deinococcus radiodurans is just one of astrobiologists&039; specutions about life on Mars, Martian life may also be creatures not found oh, No matter what kind of life, to survive on Mars, Must have the ability to adapt to strong radiation, drought, anaerobic and other enviros, It also needs to have the ability to break down iron and other minerals in the rock, half an hour, Nina looked at the transparent wooden rimless smart gsses, Said slowly: Could Jupiter have living things, Doris looked at the transparent wooden rimless smart gsses, and said slowly: Jupiter life should be some kind of creature floating in the wind, Jupiter is the rgest p in the sor system The p has no substantial surface, The closer to the ter, the greater the pressure and the higher the temperature, Not only that, but Jupiter has a violent wind, If there really is life, this creature is floating in the air, feed on anic molecules in the atmosphere, It is also possible to supplement energy through sunlight exposure, in order to maintain buoyancy, They may achieve a bang effect by pumping gas out of the body, And the gas pumped out of the body may also be how they trol their body temperature, half an hour, Nina looked at the transparent wooden rimless smart gsses, Slowly say: Europa may have creatures, Doris looked at the transparent wooden rimless smart gsses, and said slowly: Europa life should be some kind of marine life, If there was life under Europa&039; s ice cap, there might be something that looks like a squid, It should live on food from the bottom of the salty o, Europa is the celestial body with the most liquid water known to exist outside the earth. These waters may support the existence of life, If there are creatures in this eternally dark sea, They may have characteristics of Earth&039; s marine life, such as bioluminesce, and food s that rely on hydrothermal vents on the o floor, at this time, Nina looked at the transparent wooden rimless smart gsses, Slowly say: what kind of creatures may terrestrial ps have, Doris looked at the transparent wooden rimless smart gsses, and said slowly: In an imaginary alien p simir to Earth, Alien herbivores may use huge, tree-trunk-like mouths, Use vacuum to suck food from rocky surface, on these ps, The shape and habits of the animal body may vary, But the path of animal evolution, and the basic body structure that supports life will be sistent within a certain range, Under Earth-like atmospheric and gravitational ditions, The way these alien animals eat and move should be simir to their terrestrial terparts, half an hour, Nina looked at the transparent wooden rimless smart gsses, Slowly say: what kind of creatures may ultra-low temperature ps have, Doris looked at the transparent wooden rimless smart gsses, and said slowly: On some pary surfaces, Temperatures be so low that nitrogen only exist as a liquid, In such areme enviro, the anic pos of life are formed, pletely different from the physiology and life forms of terrestrial ps based on liquid water, In theory, If it provide energy in some form and keep the living body alive, Even at such low temperatures, life is possible,