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Hello Steemians!!
I, genuinity would like to welcome you all to my mini series "Space Science" in which we will talk about the science in space from the very beginning.
We all know that our universe is very vast, so vast that we cannot even imagine it. Even then, for centuries we humans have tried to gather knowledge and understand this infinite universe.
As far as we humans know and as many researches are done, it is known that there are two types of universe; one is visible universe and the other is the invisible universe.
Let us understand it more easily. Scientists say that, when Big Bang happened, there was nothing. Meaning that, there was no milky way, galaxies, sun, moon, light speed and even time.
But there was universe. This gave birth to big bang and big bang is taking its form, expanding and moving around the whole universe which we can see today. According to Big Bang Theory, it took place almost 13 billion years ago, meaning that we living beings are of the age of the world's inhabitants. So, whatever we are seeing today, this air, water, light, speed, computer, mobile, you, me, the sun, the moon and this whole visible universe is the result of big bang.
Now the speed of light in the universe is considered to be infinite meaning nothing, not even light can travel faster than it. The speed of light is 300000 km/sec and the speed by which the light can travel in one year is called light year. So all this physical objects which are spreading in the universe could not have spread faster than the speed of light.
(credits)The origin of our universe took place 13 billion years ago, so all these things would not have spread beyond the radius of 13.3 billion light years till now. The light itself would have travelled 13 billion light years only. Then what’s next?? So friends, this is what we call invisible universe which we have not been able to see or study. How is it possible to see when even light has not reached?
The discovery of powerful telescopes and the years long study of our scientists has led us to know about far away galaxies, light and even black holes.
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But so far this study is within the radius of 13 billion light years which is within the scope of visual universe. What is outside of it is beyond our imagination.
Still we can speculate about the universe. It may just be an infinite depth after that. May be there have been some other big bang somewhere else and even more greater visible universe can also be present. There is also a possibility of our parallel universe even beyond that. But it may also happen that whatever we have after that, we will never be able to imagine it because humans understanding ends out of the universe but can only guess.
Friends, we do not know what is beyond the realm of the universe beyond us, but till now we have studied many things in the realm of the universe from our side. We have searched many wonderful and strange objects. We have explored many celestial objects and we have known the infinite depths of our universe.
Our earth is a member of our solar system, but our solar system is not even like a point in our galaxy. Our bigger milky way galaxy too disappears in the breadth of the universe. So, we shall be talking about this vast universe, black holes, warm holes, dark matters, light, time and other space science related discoveries in a productive way in other episodes of this mini series.
Image credits : Google Images
That's is all for today. Thanks for reading this episode of 'Space science'. If you liked it, feel free to resteem and leave a comment! I would love to know what you think.
