This book focuses its attention on the concept that life began billions of years ago kilometers underground, arguing that it may well have started on Mars and spread to Earth by asteroid impacts. These are particular opinions and sometimes really interesting but I think that Pauld Davies could be less fanciful...Continua
So, is life easy? Can we just put a bunch of ammonia, sulpher, iron, carbonhydrate into a thick soup, and life will climb out of the slim...?
Well, not really, the author says.
The combination of DNA is very difficult and particular. He call the information contained in DNA is random and also rich. How do life first able to come up with such a complicated arrangement of amino acids... at all?
There are two school on the sequence of life. One school say, it is RNA first, then DNA. Another says the otherwise. No conclusion on this.... And most importantly, we have no clue on how life arise at all... Bear in mind of it. We are totally ignorant on how life arise.... so, better to be more open on life's varieties and possibility.
Another very very interesting point, that I won't expect to read in a biological book at all, is, how does this universe come up at all? The Second Law of Thermodynamic says that, the entrophy will keep increasing, ie, our universe keep getting more and more chaotic.... more and more heats are generated. But, as you can see, life is the complete opposite of chaos! Life make order from the chaotic environment. So, how could this possible??
This fact is very weird I have to say......
This universe's total energy is ZERO.
Why? Since, although the mass of particles contains positive energy, the gravitational force of particles are negative. We knows that E=mc(sqaure). Matter is just another energy... so, the postive energy of mass and the negative energy of gravitational field cancel out each other.... the universe still oby the second law of thermodynamic, we have zero energy as a whole.
So, where does this whole galaxies, suns, planets, moons, and us arised of? Well, although the total energy is zero, the distribution is not even. We are here since the energy of universe clustter together...
And, a very intereting topic on Mars.... When did life from the Earth arise? It is around 3.5 billion years ago. This is a very curious time since it is exactly right after the meteriotes attack from the universe just stopped. At that time, the Earth was still a totally hostile place for life, how can life arise so quickly???
One hypothesis is that, the life was not originated in the Earth. It was brought by meteriotes from Mars. There are a lot of extremeites bacteria that can endure high temperature, and freezing cold a bit higher than absolute zero, good radiation resistant and vitirally cannot be killed. If they just sit inside the meteriote from Mars, and take a ride to the Earth, they can start reproduction right the way. Bang, life begin, and we have such a huge variety up till today.
Another even more interesting thing is that, it is bacteria + archea that make the cells which make complicated life possible. Could it be.... could it be... Life orginated also by the Martian bacteria plus the Venus archea???
I know you expect a comment on Biology, not the romance self improvement book: Mens are from Mars, Women are from Venus.... but... haha... this is a very curious thing. That's why men and women are sooooo different!...Continua