Dinosaurs Extinction

Dinosaurs are so interesting to me, their life, size, habits, diet even their extinction!


the large scale of extinction of K-T, sometimes it seems that a very large Crater hit the Earth and making a tremendous explosion and creating clouds of volcanic dust over the sky cousing the long period of none sunlight, is the reason of Dinosaurs extinction. but there is some debt yet.



another fact is the Comet Shoemaker-Levy 9 who hit the Jupiter in July 1994, it wasn't any single collision, it was a series of them. so if there was any comment coming to the Earth at K-T time there were some main hits and other smaller hist, which happened not at the same time may be with a several years of period which can make enough time to change the climate by storms and the volcanic dust clouds , eliminating plants and starving the animals.
this can be the connecting point of these two facts.



all the images are from wikipedia.org

Question marks ???

There are a lot of questions in my mind about the ET life. I 'm , gonna to share them trough this blog, at least I can organize my thoughts.
the first is how can a ET life can be distinguished?
the only example of life we had seen is Earth living mechanizes. I say the carrier of life in the Earth is Carbon, what about the other planets?
the other possible carrier is Nitrogen. My assumption is based on the properties of this two elements properties such as Combination Ability with other elements and the possibility to find them in semi calm situation.
* semicalm situation : not so high and neither so cold temperature ( the Energy is different type ), not high amount radiation and so on, such as the situation on the Earth surface or beneath of Earth oceans.
please take a look at Periodic Elements Table.
second the world unfairness: this world is unfair, you can see the deserts and sees, the amount of water is not equally spread. the same situation exist for other elements and phenomenons at this world. the Energy, different elements, the roads to reach some resource, also in one word the resources are not distributed all over the mater world fairly. based on this talk, there is possible to ET Civilization Trade, Competition, Taking under domination, Ownership, Transportation, Communication and Money would be meaningful.
so how could these ideas be for ET civilizations?

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Explanation

Thanks to all of you, who read my first blog
whenwemeetforeigncivilization.blogspot.com
may be it seems that I 'm updating my blog so slowly. But at first I must say I have an idea in my mind, and I'm gonna to share it with you, I mean the hole story. The hole story is meeting aliens and foreign civilizations, the thing which is in my mind all the time ;) how they could be, how would be the meeting process, what are the advantages and challenges of meeting alien civilization or things like that, always I think about those things.
I have my made universe inside my mind. Before I get able to tell the main stories I must explain some issues such as meaning of life, the meaning of logic and intelligence, the phenomena of to be civilized and so on. So I started my blog with such articles, I hope these aren't boring and would help me to explain my ideas better.
In this blog I would discuss the ideas, so I'm waiting for your comments, criticisms also helps and ideas.