Saturday, August 31, 2013
Questions about time, space and big bang
When we talk about the big bang, almost every scientist say that it was the event that made everything, incluiding matter, space, time etc. When you ask if there was something before the big bang they say that there was literaly nothing, and time or space did not exist. However I think its impossible to say that time and space had a begining and will have an end. Well if we talk about the space of our universe (everything until the edge of the universe)and the time of our universe then yes they will have an end when the heat death will ocour, because there will be nothing left in our universe. But the real question is, did time and space already existed before the big bang? Well I cant be sure, in fact no one will ever be sure about this but the answer is: yes. Because saying that nothing was there before the big bang is impossible. You may say that before you were born there was nothing because you are made of matter, cells but space itself, time, and the absence of matter always existed and will always exist. There is just no way that they had a begining and will have an end because its like the infinite itself. You may say that before the big bang, just before there was really nothing, but the infinite exists, so there has to be other universes, other things that had a begining. But the cicle itself never had a begining.
Tuesday, June 11, 2013
Theory of everything
I love to think about our universe. Because of that, a few months ago I thought of an astonishing idea - the theory of everything. The theory of everything is, if I am right the theory that can explain how the universe was created, why was created and when was created. I will explain it - its a bit complicated, but you will understand if you read everything. Oh and by universe I have two meanings - one is everything (the infinite) and the other is our stars, galaxies, groups of galaxies etc. Our universe was born 13.9 bilion years ago. Before that there was nothing, at least where we are. Our universe is now expanding, which it means that our galaxy is moving away from the others. Imagine a balloon without air. It is very small, and you attach several little black points to the balloon. They are very close to each other, but as soon as you fill the balloon with air the points get away from each other. That is what is happening to the universe now. Well, due to that there wont be a big cruch, and everything will get very far away from us in trillions of years. Eventualy, the biggest stars will die, leaving only the stars with the size of the sun and smaller ones. Those will also die one day, and there will be a last star before everything becomes dark. After that the black holes will also die, and the last thing that lasted in our universe (example: a rock?) will eventualy dissapear too. Our universe will reach then a state that is equal to what was before it existed - nothing. Well this makes me thing that since that will happen, our so called "universe" cant stay like that forever. Something new has to appear after everything dissapears. It cant stay empty forever. So, it is very likely that a new universe will appear. It may be bigger than ours. It may be smaller. Who knows? but I only know one thing - it has to appear. Then I think about this - Before our universe existed, was there another one that died? The answer is most likely yes. And not just one universe, infinite universes! Of all kinds. They always existed and will always exist. Then it comes the bigger part. There is no limit or "beyond" of the infinite. It never ends, simple as that. Even if you go at a speed much faster than light (which is impossible) you will never find an end. So, this makes me conclude that there is an infinite number of universes right now, and that they always existed and will always exist. Why? Because time is infinite and space is infinite too, which it makes possible that there is an endless number of universes out there, far away from us (I am not talking about paralel universes). If this theory is true, then there are thousands of persons... no, infinite persons just like you. And of course, some are much more powerful than you. In fact, there are likely lots of people just like you being in charge of a hole planet, or even a galaxy. Everything you have always dreamed is actually happening right now in another planet, very far from us. Some dreams that you have thought (like becoming a billionaire, being super famous, dating someone) is actually happening to someone just like you in another planet. This may suck, but remember: if this is true, then you are living the dream of an alter ego of you in another planet.
Life, before life and after life
First of all, I have to say I am not either atheist (someone who doesnt belive there is a god) or theist (someone who belives that there is a god), I am agnostic (agnosticism is a view that you dont know which of the questions is correct - is there a god? is there no god? - but you think that both are possible). I respect any person's religious views even if the religion itself is extremely stupid, but I dont like to say if there is something or not after the life ends, because we are nothing but dust in a gigantic universe, and maybe our gigantic universe is extremly small compared to others. So why trying to know if there is a god, if there is no god or if there is life after death? We dont know yet, and I am almost sure we never will know. Now recently I have thought of an idea. Well, obviosly almost everyone fears death, at least a little bit. We hate the idea of eternal death (eternal death is like everything you remember before you were born - of course it seems stupid because you dont remember anything before you were born, yet much more than trillions of years passed before the day of your birth. Well not trillions, infinite years because time has always existed - though time in my opinion is just an illusion). We fear it because its awful to think that when you will die everything good you did and remember will dissapear. As a child you can either be taught that there is a god or not, but we always think of the idea of eternal death (and dont feel bad if you are super religious, because everyone always doubted that there may be a god - at least once). Its scary to us but imagine this - you were born now, and everyone around you is saying that there is a god, there is eternal life, and that after you die you will experience infinite kinds of things. Their technology is very advanced, so they trick you saying its magic and miracles. As life goes, wouldnt you be afraid of eternal life? It sounds fantastic at the beggining, but wouldnt you get tired after... I dont know a few billions of years? Its scary to think of that because, even if I wished death I wouldnt die. I could even change myself with "magic" or whatever but after quadrilions of years I am sure that I would tire of everything. After I thought of this I got a conclusion: eternal life is scary and eternal death is scary. But we dont know which one is the correct thing that will happen to us, and I am sure we never will.
Habitable planets - What are them?
A habitable planet is a planet capable of suporting life. The earth is one of such, and its very likely that there are bilions of other planets like our own across the universe. A planet habitability can be very different with the size of the star and the size of the planet, because if it is a big, very big planet its likely that life there is only microscopic, while an ideal planet (like earth) may have macroscopic life, maybe even with intelligent creatures. The astronomers have found over the last ten years all kinds of planets: some so hot that the rain is fire instead of water (51 pegasi b), others so light that would float (HAT-P-1), and others that the atmosphere is destroyed by its own star (example: HD 209458 b). But they have also found some very interesting planets with life. One of the most popular habitable planet is gliese 581c (or gj 581c), a planet 20 light years away that orbits a red, small star (type M). Since the star is so small, the planet is much closer to the star than the earth is close to the sun, because in order to have a planet in the habitable zone (the zone of a star that is not too hot or too cold - Venus, Earth and Mars are in the habitable zone) of a tiny star the planet has to be very close to it. If you were in gliese 581c now you would see a giant red star in the sky, and everything would have a red, darkish color (yes, incluiding your skin color). Another planet, the upsilon andromedae d is very pleasant. Well the planet itself isnt very nice because its a gas giant with gigantic storms, but some of the moons of upsilon andromedae d are habitable, and being in there would be very different like walking on the earth. The star is a little more blue/white than the sun, and every time you look at the sky you see a giant, beautiful gas planet (have you ever seen the movie Avatar? The planet that the humans go, Pandora is very much like this one). And who knows whats in there? It could be a forming planet, or a Pre- historic planet (actualy moon) with dinosaurs, or even a planet with a very advanced civilization (the first option is the most likely, since the star itself - upsilon andromedae - is only 3 bilion years old. But who knows?
Introduction to the blog
In this blog you are going to be able to visit many wonderful things in our universe, such as habitable planets, stars and galaxies. I also will post many theories of everything related to our universe and life itself. I hope you learn a lot in this blog, and I would also love to learn more with you, if you post your theories and advices.
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