The Vast Universe's Beauty

What is a nebula? How are nebulae formed? What are the types of nebulae, and how do they differ from each other? What is the shape of nebulae, and how do they look? Read on to know more! WHAT IS A NEBULA? A nebula is an interstellar cloud of hydrogen, helium, and other ionized gases(gases that carry a positive or negative charge). A nebula can also consist of plasma( state of matter wherein an atom gets so much heated that it's orbiting electrons are thrown out of their shells. They are super-ionized). All this makes nebula quite bright. Below is a picture showing a nebula. Helix nebula I know it looks like some weird eye-ball from horror movies, but that's how 'Helix Nebula' ( Planetary nebula) looks like (I have talked more about types of nebulae later in this article). Nebulae have really low density. For example, think about this: If the earth magically transforms into a nebula of the same size that of earth, it would weigh just a few kilogram...

What is Spacetime? How is it different from the normal time on earth? What is time dilation, and how can we use it to time travel to the future, and how can we achieve it? What does the general theory of relativity state? So.. earlier, it was all going good... The people then thought that time was flat, as it passes evenly through a place. But then the world came across a guy called Albert Einstein, who ruined it all. He said that the time was curved... He said that time was relative. He called this the theory of relativity, which established a connection between space and time. He thought of an idea in which fabric permeates the whole universe... The Space Time . Space time is curved, not flat, and it can be bent and twisted out of it's form by matter and energy, and that's where this picture comes in. Notice the grid below the planet(or whatever that is). Well, that is time.The force of gravity and the matter of the planet bends  the time around it. GRAVIT...

What is the shortest distance from one point to the other? How can we travel extremely large distances through the universe(distances such as billions of light years)? Are wormholes possible?How can we travel through wormholes and how are they formed? If I draw 2 points with some separation, and then I ask you to tell me the shortest path between the two points, you might say it's a straight line connecting the two points. But, if I fold the same paper in such a way that the two points are touching each other, a much shorter path is created.... WHAT IS A WORMHOLE? A wormhole, also called the Einstein-Rosen Bridge, is the theoretical(imaginary) path between two very distant points in the universe, which passes through spacetime. (If you do not know what is spacetime, then go to:  https://theuniversebeauty.blogspot.com/ , and read my article on it). Wormholes are a result of the general theory of relativity. Ludwig Famm, an Austrian Physicist, mentioned th...

What is Dark energy? What is it made up of? What is it responsible for? What is it's source? Is dark energy real? Find out the answers to these questions in this article below. We all know about the big bang theory-the origin of the universe. You might also know that the universe is expanding. With expanding, I mean that the galaxies are moving further apart from each other. But, there is something confusing, something that baffles the scientists- The expansion is accelerating , which is peculiar, as the universe is devoid of air, and there is supposed to be no other force or energy in space. But still it happens. The universe is accelerating Which means there must be some force or energy out there. This, we named, the Dark Energy. Dark energy must be very powerful, as it has to overcome the gravitational forces that pull the galaxies together. More than 80% of the universe is made of dark energy. This means that the 'space' as we know is not made of nothing...

What is dark matter? What is Black matter? What is the dark matter theory all about? Is there anything out there in the universe which causes all these asteroid and volcanic attacks on earth? Is there another universe made out of something that we can never even feel? Get all these answers in this article about dark matter. This is what dark matter is presumed to look like: If you are a space fanatic like me, then you probably would know that the sun revolves around the center of the milky way galaxy, and has a pendulum-like up and down motion during it's path(this up and down pendulum like motion is represented by the green lines in the figure below.) Then, you will also know that disasters like huge volcanic eruptions and meteor attacks have led to the complete wipe-out of many species, one of them being dinosaurs. So, what's the pattern of all this? Is there any time interval between them? Is it going to happen to us humans also? Answer: I don't know...

What is a neutron star? What does it look like? What are the mind-blowing activities that happen near it and in it? How is it formed? In my last blog, I wrote about Supernova, the end product of which is a 'neutron star', and that's what I'm going to talk about now. So.. Which is the densest thing? answer: Osmium, density:  more than 100 grams in a teaspoonful. But that's only on earth. The universe is of another level.. The densest thing in the universe is the neutron star.                       That's what it looks like. What do we know about the regular matter on earth? - It is made up of atoms with electrons revolving around neutrons and protons. But it's completely different with a neutron star. The lines you see near the neutron star in the figure above are the strong magnetic field lines, enough to pull out the iron in the haemoglobin inside your blood. As I have discussed in my ...

What comes to your mind when you think of the universe? probably a huge number of stars in a black background..probably the sun shining on some planets.. Just after supernova, this is seen. But the universe is a lot more than that. The universe is very, very and very energetic and active. There is a supernova happening right now even when you are reading this article, though millions and millions of light years away! Yes, I am now going to talk about this super energetic phenomenon - A Supernova. A Supernova looks something like this: So you surely do know about gravity, right? Gravity plays a huge role in a supernova. So these hydrogen, helium, etc. all types of molecules and gases are present in a star. The gravity of a star is intense, owing to it's huge mass. This gravity pulls these atoms and molecules close together at the nucleus of the star, and intense pressure is developed there at the center. This continues to build up over a long period of t...