Start of Universe

                               Black holes : The journey of no return ?   Black Holes : Black Holes are one of the most facsinating and mysterious objects in the universe. They are formed when a very huge star dies off or collapses on itself to a infinitely dense point having super powerful gravity. The gravitational forces in these bodies is so strong that even the fastest known entity to us  light , cannot come out of it. These black holes are so small and even light cannot escape it making them invisible for us to see or spot them in the universe. The boundary of Black Holes is called as 'Event Horizon' . EVENT HORIZON : The event horizon or the point of no return is the boundary of a black hole. When any matter crosses this invisible boundary it is sucked in by the super powerful gravitational force and is then absorbed in the singularity of the  black hole. How do scientists spot Black Holes : Scientists spot these invisible bodies by observing the matter arou

                                                     Life cycle of stars [ Part 2 of 2 ]          In the last blog we discussed about what stars are and the different paths of their evolution. We even discussed the 1st path of evolution of stars. In this blog we found will be discussing the other 2 paths of evolution and a few other characteristics of stars.👇👇👇 2nd path of evolution :  Stars falling in this category are really big right from the time when they are born out from the nebulae. Due to being large in size the amount of elements in these stars are also in large numbers. They even consume them quite fast and hence the larger the star the faster is it’s evolution.  Even these stars go through the same stages through which the smaller stars go but get much bigger in size. Based on their sizes and colours they are categorised differently, for e.g. : blue supergiants , blue hyper giants , red supergiant , red hyper giant. At today’s point UY Scuti ( red hyper giant ) i

                                                       Life cycle of stars  ( PART 1 of 2)                         What are stars ? How do they form ? What is evolution of stars ? How do they affect us and some other questions related to stars and their importance in universe will be sought out in this blog.  👇 👇 👇 What are stars ? Stars are nothing but hot and dense spheres of gases in which the elements ignite / burn themselves for generating energy which keeps the star at constant temperature and brightness. Forces in a star : There are mainly 2 forces acting in any star namely the gravitational force which pulls the particles towards the star and the pressure of the hot gasses in the star due to which the particles are thrown away from the star. While these 2 forces are constant the star remains stable. Birth and evolution  of stars : Stars are born out of large nebulas. These nebulas have large numbers of elements in them. Slowly with time the gravitatio

                             Start of universe  ( Part 2 )               In the previous blog we discussed about the evoulution of the unvierse and its phases, In this blog we will be discussing the matter era , so lets dive in Matter Era : The matter era was an important time period in the evolution of universe. As the name suggests in this era , , , slowly matter came into existence.  This era is again divided into 3 epochs namely ATOMIC EPOCH , GALACTIC EPOCH and STRLLAR EPOCH :-  Atomic Epoch : As we discussed in my earlier blog the atomic epoch was an important part of the evolution as in this time frame the temperature of the universe gradually dropped allowing protons , neutrons and electrons to bond together and form the elements like  HELIUM. This process is known as recombination . Through a similar process the second element HYDROGEN was also formed. Galactic Epoch : These helium and hydrogen atoms got collected at various places to form large nebulas.

                                              Start of universe        There have been many myths and sayings about how the universe came into being but today the most commonly accepted theory providing an explanation of the birth of universe is the Big Bang theory.                 The Big Bang theory offers an explanation according to which the universe started as a hot and infinitely dense point only a few millimeters wide which later exploded creating the whole universe we know today. In this process of big bang to the world we today live in there were many stages of which are mentioned below. 👇 👇 👇 Radiation Era & Matter Era        These 2 eras are the 2 most important stages of the universe that shaped our today's universe. Radiation era :  The first came the radiation era. This era had several small stages of evolution  which are known as ' epochs'  . There were a total of 8 epochs in the radiation era. The first was the PLANCK EPOCHS. In thi