Posted: 16 July 2011 at 2:37pm | IP Logged
@ Summar bhai, about UFOs
Thats true that we don't haveany evidence about UFOs and their existance. Mopst of the time they concluded that those UFOs were US air crafts on some secret air force mission.
I have seen some crazy people on US tv shows who claim that they were abducted by aliens but they failed to give any evidence in support of their story. To be very honest with you my friend, I do not believe in UFOs.
@ blue ice,
I agree with you. It does not make any sense to me that we are alone in this universe. If life can evolve on our planet why not elsewhere? I do believe in existence of intelligent life in our galaxy or universe. As you have said, there are billions of galaxies and trillions of Planets in our universe. The basic element is hydrogen and all stars are made up of hydrogen (1 proton and 1 electron) and all stars fuse 4 atoms of hydrogen to form 1 atom of helium (2 protos, 2 nutrons and 2 elecrons) + energy. In further reactions they produce Lithium, berilium, Boron and Carbon.
Carbon is a lovely element and its the key element of life on earth because life on our planet is Carbon base. It may be because Carbon has 4 valency electrons which can react with very many other elements to form long chain molecules we call proteins and nucleic acids that is DNAs and RNAs.
Biologists and Astronomers suggest that a Planet has to be in Bio-sphere to support life. What bio-sphere means is that in order to support life a planet must be at safe distance from its Sun and it should have enough gravity to form its own atmosphere which can retain heat and hold its atmosphere with minimal loss of gasses and other matter in to outer space.
We are lucky that our mother earth meets that criteria and has got all these wonderful qualities.
Planet may not have blue- ice on its surface but it must have liquid water available to support and evolution of life.
Astronomers estimate that there should be billions of earth like Planets in outer universe. Water is also very common sustance in our universe. All comets are made up of water and dust and most of chemical reactions produce water as byproduct. Before Animals can evolve, Plants must evolve and exist on the Planet because they are the primary producer of food for all Animals. Remember in day reactions, all plants convert water and CO2 into glucose in the presence of sunlight. Thus existence of Animals is not possible without Plants. They also produce proteins for us.
whatever it is, its very interesting suject and only God knows what this is all about. I don't think Humans will ever succeed in interstellar travel. The closest star alpha century is about 4.2 light years away from our Sun. Hey bhagwaan, tu hi janee ye kya gorekdhanda hai.