Wondering About the Stars

  Change! It can be a good or a bad thing. I know that I have been off the charts lately but I am back to writing blogs and am going to start writing blogs about medicine and biology too! It is a sudden interest spark in me and I am excited about this, so let's move forward.   Common health problems such as an Allergy, cold, flu, fever etc are easily treatable but can turn out to be dangerous if not treated in time. Here are some common health problems with symptoms, causes, treatment. I am also going to tell you how to prevent them from happening. Let's Start!   Allergies Allergies are a common response to any allergen which can be in your food, through air etc. Causes:   Some common allergens are foods such as nuts, eggs, milk etc. It can also be spread through air by pollen which is dust allergy. Some allergies may happen due to direct contact with an insect such as a mosquito. Sometimes if you have an allergy because the weather is too hot and you are sweating an...

 Hey, Welcome back! Its the second part of the blog. Let's start from where we left off. Now that you know the shapes, we can talk about the types of galaxies. Active Galaxies Around an estimated number of 10% of the galaxies as we know it in our universe are active galaxies. These types of galaxies have a centre which is 100 times more brighter than the light of all of their stars combined. Astronomers believe that this energy comes from the Supermassive Black Holes in their centres. Gas and dust collect around the black hole to form an accretion disk. The black hole’s gravity compresses and heats the disk, which causes the material to glow. Active galaxies can also be categorized into 2 types. But for that, first we should know what a Radio Galaxy means. A radio galaxy is a galaxy with giant radio emissions well beyond its visible structure. The 2 types of radio galaxies are Radio-loud galaxies and Radio-quiet galaxies. Radio-loud galaxies emit large amounts from both their ...

Note: This is something which I am doing for the first time. I am going to upload this blog in 2 parts because I feel like its too big and I don’t want to waste your time. Enjoy! What are the biggest bodies in our universe? A star, a black hole or a neutron star, yes but all of them they don’t lie in empty space, right? They are inside galaxies. What is a galaxy? A galaxy is a system of stars, planets, huge clouds of gas and dust, probably black holes and a lot of other celestial objects. It may and mostly will contain star systems, will get to that later. It also contains planetary systems. The Galaxy which we live in is a neighbour of the Andromeda Galaxy and we believe that Our galaxy, The Milky Way is going to collide with the Andromeda in about 4.5 billion years. Mostly everything in this universe is inside galaxies, even galaxies are inside galaxies, the whole universe is made up of galaxies. So, let’s talk about galaxies. Life Cycle of a Galaxy Yes, there is something known as t...

 From Aristotle to Galileo to Newton to Einstein to Oppenheimer to Hawking to Thorne to DeGrasse Tyson. This world has seen a lot of great physicists, I know I missed many but I was going Generation wise. What was the founding stone for physics? Well I don’t know, maybe people were just fascinated by looking at the stars and noticing how things fall down and how things roll down, they were fascinated just like us. Newton discovered gravity, one of the most significant inventions in the whole of physics, more significant than Einstein’s actually. His laws of motion were a great revolution in physics too. These laws were the foundation of classical physics which you all study today. Taking account from discoveries by Aristotle and Galileo, he truly made 3 laws which describe half of physics. Today, we are going to talk about them. I am excited, let’s start this! Just a little context, Newton’s 3 statements describe relations between forces acting on a body. Newton said that everyone ...

 What comes to your mind when you think about physics or someone asks you about the definition of physics? For me, its nature. What is Physics? Physics is just trying to understand and discover about the laws of nature. The laws of nature govern literally everything in this universe. The laws of nature or the laws of physics, whatever you say it’s correct. Classical Physics is the study of laws of nature at a large scale, where if you say a particle, it is not a particle but a body with smaller mass than the other (reasonably smaller mass). Quantum Physics is the study of laws of physics at a subatomic level (level of atoms where the laws of classical physics don’t apply). The laws of nature or physics don’t apply to the quantum world, but can’t keep the natural forces of nature apart, can you? The forces of nature do apply to the quantum world. Well when we study about the forces of nature, we study about them at both the subatomic and classical scales. So, we don’t categoriz...

 Hey, so last time around we talked about the general theory of relativity which is the most famous theory of all time as I mentioned in my previous blog. This time around, we are going to talk about the Special Theory of Relativity which came out earlier than the general theory of relativity but wasn't recognized as much as the general theory as it was more complex, about a more compound topic which is light and time. I believe as the general theory of relativity was easier to understand, it became more popular than the Special Theory of relativity. Well, what is the special theory of relativity? Einstein told everyone that there is no such thing known as absolute motion or absolute rest. Imagine that you, my friend are on a train and that train is moving in a periodic motion, you think that the train is moving and you are at rest, right? No, you are wrong, you are moving relative to the train and the train is moving relative to the Earth which is moving relative to the sun taking...

 What happens when we drop an apple to the ground? It falls down, right? Why does it fall down, because of gravity. It’s the most common answer. Because it is the only answer. The General Theory of Relativity, I have seen a lot of people talk about it, even if they don’t know enough about it. It is the most popular theory that exists as of current time and that’s just because it helped to create a new world of physics, helped to improve the ongoing world of physics and used old physician tools and systems to prove it’s calculations. Einstein because of this became the most respected, important and brilliant scientist of all time, so I thought why not talk about it? The general theory of relativity opened the door to quantum physics, as Niels Bohr said. But Einstein never really embraced the quantum world it revealed. When you bring a magnet close to a piece of iron, it attracts the iron and it sticks to the magnet, and it just happens in empty space, right? The magnetic field of a ...

 The Quantum world! People don't talk about it enough, it is a very niche domain in physics that humans have still not been able to understand fully. It comprehends all the laws of physics that we know, none of the rules that we know about the universe work here. And maybe that's why no one really talks about it enough, I mean Einstein himself declined the quantum world, although his general and special theory of relativity do support it, I mean not directly but they do. Everyone knows that humans are made up of atoms, yes. But little do they know what lies deep beneath inside those atoms. The particles that make up matter are known as atoms which are made up of electrons, neutrons and protons which are made up of gluons or gauge bosons which have a strong binding force that binds protons and neutrons together and holds the nucleus which are made up of quarks. Gluons carry their own force meaning they can form complex structures like glue balls. Quantum physics is the study ass...

 Imagine this for me, a star, a vast furnace, burning in outer space, fusing hydrogen into helium in it’s core, shining brightly out there lonely in space. No one knows when its gonna die or when it was born. We humans trillions of miles away from it. Yesterday, I went to my balcony, saw a star and started wondering that although we can see the star from here but who knows it might not even be alive, it might be dead, we might be looking at a dead star, who knows? It might have become a neutron star, a white dwarf, a nebula or a black hole, we can’t just see it because of the distance, because of how far away it is from us. Light has a definitive speed, we all know that, it takes a certain amount of time to reach from 1 place to another. Light travels in a periodic motion, it covers equal distances in equal periods of time. For example- the light from the sun reaches us in 8 minutes, if the sun is dead, we wouldn’t even know about it for those 8 minutes, for us nothing has even hap...