All about Universe: Size, distances, comparisons. All these laws of physics are the laws of your Lord by which He is Running His Kingdom.
O assembly of Jinn and Men did there not come to you messengers from among you, narrating to you your Lord’s revelations and telling you that your Lord is one God, and He created you and all this around you. Do you think that all this is created without any creator? Woe to you for what you assume and woe to you for what you believe. You do not have this opinion for the smallest thing around you which you have created. No one among you even the most duffer and ignorant can claim that even the laces of his shoe are designed by its own but for this magnificent universe, you think that it is created by its own.
Look at the universe around you and then look within yourself. Everything is working under established systems. All this is under precise measurements and calculations from the creation of this huge universe and then billions of stars and planets and then the creation of humans on Earth. Look at the size and vastness of the Kingdom of God around you. Only the observable universe is about 90 billion light years in diameter. There are at least 100-200 billion galaxies, each with one hundred to one thousand billion stars. And, there are probably billions of habitable planets in the universe. Lots of stars and planets, roughly ten thousand stars for every grain of sand on earth and 100 thousand planets for every grain of sand on earth. Is this all designed, created, happening and running by its own. Nay, it is all by the Will and command of your Lord. So which of the favors of your Lord will you deny?
All these estimates mentioned above regarding the size of the universe calculated after 1995 Hubble observations and that was the working assessment for the next two decades, until 2016. And now according to Astrophysical Journal over 90 percent of the galaxies in the observable Universe have yet to be studied. The following decade will see a host of new observatories come online. The Hubble’s successor, the James Webb Space Telescope, will be launched into orbit in 2018. So expect the number of galaxies to increase to astonishing trillions in number. For those who do not have any idea of how big this figure is? If you start counting 1,2,3 with normal speed, then it will take almost 25 years day and night to reach a billion count and almost 25000 years to count a one trillion figure. Everything in this vast and magnificent universe is in motion and in perfect harmony with each other. Is this all created and continue to exist on its own. Nay, it is all by the Will and command of your Lord. So which of the favors of your Lord will you deny?
The distances in the universe are so big that you cannot measure in your normal terms. It can only be measured in terms of a light year which is the distance light travels in one year while the speed of light is 300,000 km /sec. This speed is so much that nothing can travel faster than light. In just one second lights travels 7.5 times around our earth. In a year it travels 9.5 trillion Km and is called a light year which is a distance of length, not time. We live in a galaxy which we named as Milky Way with a diameter of 100,000 light years, and a thickness of 1000 light years, with approx. 100-400 billion stars like our sun although the majority of them are bigger than our sun. The nearest galaxy to milky way is Andromeda, a galaxy much like our own Milky Way. It is 2.2 million light years away from us. It means that with a speed of 300,000 km/sec it takes almost 2.2 million years for light or any other object to reach Andromeda the nearest neighborhood. The stars we see in the night sky are very far away from us, so far the star light we see has taken a long time to travel across space to reach our eyes. That means whenever we look out into the night and gaze at stars we are actually experiencing the past.
Specialized telescopes enable us to look towards very distant objects in the universe. There are some incredible images, one of which is the Hubble Ultra Deep Field. HUDF is an image of a small region of space, containing an estimated 10,000 galaxies. Looking back approximately 13 billion years. In just one picture we are transported 13 billion years into the past, just 400 to 800 million years after the Big Bang, which is early in terms of the universe’s history. Do you know that the stars you see in the sky may be dead? As they are billions of light years away from us and it will take billions of years for the light to reach earth, which means that the stars light which you see now is billion-year-old lighting. So they may be dead now. Every day almost 275-400 million stars die and nearly 400 million new stars are born only in our observable universe. Is this all happening and running by its own. Nay, it is all by the Will and command of your Lord. So which of the favors of your Lord will you deny?
As I told you that only the size of the observable universe is 90 billion light years in diameter. Moreover, even this magnitude is not fixed because our universe is expanding continuously and this expansion rate is more than the speed of light. But, nothing can travel greater than the speed of light. I will explain later that how this is happening. However, at the moment just want to let you realize the beyond imagination power of creation of your Lord by which He created this vast universe and simultaneously created such small things like atoms, micro organisms and human cells which have a whole universe inside them with wonderful details and fully functional systems. Now you already have an idea of the vastness of this universe, and I am giving you a comparison of how much tiny and small things your Lord has created. In physics, the Planck length is thought to represent the theoretical limit of the shortest measurable length. According to the uncertainty principle, no instrument should ever be able to measure anything smaller, because at that range, the universe is probabilistic and indeterminate.
Perhaps all of the universe’s smallest things are roughly the size of the Planck length. Singularities of black holes and elementary particles of the universe could all turn out to be about the scale of the “Planck length. The known smallest thing in this universe is a quark which makes up hadrons, the most stable of which are protons and neutrons which in turn are the building blocks of an atom. All elementary particles are point particles. This means that they are 0-dimensional; their “size” is zero. So there is no smallest particle among them; all elementary particles are exactly the same size. A Planck length is 1.6 x 10^-35 meters the number 16 preceded by 34 zeroes and a decimal point. 10 power 25 meters is the size of the observable universe, and 10 power -5 their mean the middle point is the size of human cell or bacteria. So to imagine how small is planck length is to consider a human cell with the universe and then the human cell is as big as the universe to a planck scale. Is this all designed, created, happening and running by its own. Nay, it is all by the Will and command of your Lord. So which of the favors of your Lord will you deny?
Moreover, all this from subatomic particle to our earth, the sun, our galaxy and even our whole universe is not static but continuously in motion. Our Earth rotates around its axis at 1600km/hr, which causes day and night on earth. Then it revolves around the sun at 107,000km/hr which is responsible for our 12 months year and different seasons on earth. The Sun is also not stationary but is in motion with a speed of 800,000 km/hr in the direction of the bright star Vega in the constellation of Lyra along with all the solar system including planet earth and our