Skip to main content

Beauty of the Cosmos-Nebulas


Carina nebula
I spent half of my childhood thinking about the space.Every night observing the sky and reading books,magazines that are related to astroscience. Then one day I learnt about heavenly Nebulas from a magazine.There were so many beautiful pictures of nebulas and I almost couldn't believe such a thing exists.They were more like someone's drawings.I didn't have a way to find more information about nebulas at that time (I was only about 7 years back then),and gradually I forgot it until yesterday.So I'm going to tell you in brief what I learned about nebulas.



Eagle nebula
Nebula is a Latin word for cloud.It's an interstellar cloud of dust,hydrogen,helium and other ionized gasses.
They are about hundreds of light metres in diameter and denser than the space around them.But they are far less dense than any vacuum on earth.For an example,a nebula cloud as big as our earth would have a total mass of few kilograms .
Orion nebula

Many nebulas form from the gravitational collapse of gas in the interstellar medium.When the material collapses under its own weight massive stars form in the centre and their UV radiation ionizes surrounding gases.So these gases makes it visible at optical wavelengths.And some other nebulas form as results of supernova explosions and planetary nebulas. I'm not going to make you a headache using scientific words and all :).I just wanted to say how beautiful these are and I'm sure you'll be fascinated to see these too.They are so beautiful,aren't they?


Carina nebula
Horsehead nebula

Omega nebula

Tarantula nebula

Veli nebula
North America nebula

There might be thousands of secrets buried in space which we still have not discovered.Even thinking about that makes me crazy....What do you think?


Comments

  1. This comment has been removed by a blog administrator.

    ReplyDelete

Post a Comment

Popular posts from this blog

Good books for students studying for GCE A/L examination...

As we all know A/Ls is a very tough exam and you will not be able to finish it successfully by just studying.It needs practice,timing and all.So the best way to do it is do exercises and improve knowledge,i did A/Ls in physical science stream and in sinhala medium,so based on my experience i will recommend anyone to use following books.There may be books better than following list,but books below were used by me. Chemistry almost every book by hemachandra basnayaka Akabanika rasayanaya by Aruna Bandara (there are two books for inorganic chemistry,these books will help you in for the doubts you will have in doing mcqs) Akabanika rasayana pilibanda gunathmaka ha pramanathmaka wishleshanaya by Ranga gunarathna(this also will help you in mcqs) Organic chemistry by jayathilaka(this book is very good and it will help you to understand concepts in organic chemistry better) Physics Prof D.D.N balo dayas' books yanthra vidyawa by lakshaman dissanayaka(questionsin this book  are ...

How to survive A/Ls in 3 months...

Today is the first of May and there are exactly three months until GCE A/L exams begin. I intend to help people who has realized this and started panicking and feeling lost, but not only A/L students but also any student with any upcoming exam can use these tips to ace your exam. I will first explain why most of us usually wait until the day before deadline to do stuff. It's explained by Parkinson's law which states that " Work expands so as to fill the time available for its completion". What it means is, if we are given a week to finish a task we will finish it within the week and if we are given an year to finish the same task we will spend the whole year doing it. Well that's how usually us, lazy humans work. Now that you know what happened there is no time to regret about how we procrastinated on unnecessary things etc. Now it's time to damage control. I will not gurantee you will get 3As by following these. (It's possible depending on ...

How to get 90+ for GCE A/L Chemistry paper..

Well  for most of the people doing A/Ls in science stream, chemistry is a nightmare, especially for physical science students. So today I'm going to tell you how to write to a chemistry paper in a much different way than you always do. Well it worked for me,and you should test this way with a model paper or in a term test before you go to exam.This saves time and also you can easily score 90+.