Mystery of The Universe
The universe is defined as everything that physically exists: the entirety of space and time, all forms of matter, energy and momentum, and the physical laws and constants that govern them; more customarily defined as everything that exists, has existed and will exist. Although it is believed that other universes also exist, but our universe, as we know, is an amazing thing, and is everything within our connected space-time that could ever interact with us and vice-versa. The universe is often called mysterious as it is something very obscure and is beyond human knowledge to explain.
It is always a mystery about how the universe began, whether if and when it will end. Astronomers have constructed two types of models to find an answer, viz. Big Bang and Steady State. However, the big Bang theory can best explain the creation of the universe. This model postulates that about 15 to 20 billion years ago, the universe violently exploded into being, in an event called the Big Bang. Before the Big Bang, all of the matter and radiation of the present universe were packed together in the primeval fireball. The Big bang was the start of time and space. The matter and radiation of that early stage rapidly expanded and cooled. Several million years later, it condensed into galaxies. The universe has continued to expand, and the galaxies have continued moving away.
The universe is so diverse and unique, and it interests the scientists to learn about all the variance that lies beyond the man’s grasp. Within this marvel of wonders our universe holds a mystery that is very difficult to understand because of the complications that arise when trying to examine and explore the principles of space. One of the great mysteries of the universe happens to be that of ever elusive ‘black-hole’. The universe is believed to be mostly composed of dark energy and dark matter, both of which are poorly understood at present.
The universe is infinite in volume, the observable matter is spread over in space of at least 93 billion light years across; and consists, of galaxies, black holes, comets, planets, satellites that we are aware of. The observable matter of the universe is observed as ‘clumps’ i.e. to cluster; many atoms are condensed into stars, most stars into galaxies and black holes. Within our galaxy viz. the `milky-way’, there are millions upon millions of stars. Within our universe, there are millions upon millions of galaxies. Galaxies are white glowing specks in the sky; the mystery does not lie within what we can see, but what we cannot see. There are millions of stars lighting the darkness of our universe, but the question lies in what happens when one of these enormous lamps burns out. One of the most fascinating is the ‘black hole’ theory; one of the great mysteries of the universe is that of the ever clandestine, black-hole. Not any star can become a black-hole. Only a very large star has the potential to – become a black-hole. Generally, a black-hole is defined as a region where matter collapses to infinite density, and where as a result, the curvature of space-time is extreme. Moreover, the intense gravitational field of the black-hole prevents any light or other electromagnetic radiation from escaping. The name black-hole is because of the fact that not even light could escape their gravitational pull; light as a result, disappears from the visible universe; and ‘hole’ denotes the actual hole where everything is absorbed and where the centre core is found.
The universe is indeed a creation of wonder and it is unfathomable by man. Its gargantuan size makes us repeat so often the saying, “Many, 0 Lord my God, are the wonders you have done”
Thank you so much for help. It means a lot.