Black hole in Milkyway galaxy!

We are repleted with abundant resources by nature in our home ground "Earth".  Relaxing in your place and ready to know the terms "Galaxy" and "Blackhole"?

Where exactly everything began? Let us go in and explore!

Earth, numbered as 3rd planet rotating on its axis and revolving around the sun, also called as the 

"Host Star" in the Solar System which is the minuscule portion in our Milkyway galaxy. Similar to our familiar cluster of planets superficially termed as stars, the galaxy is collection of billions of stars. 

Time after Big Bang about 200 million years there formed a "Galactic Epoch" part of the matter era dispositioned atomic clouds for the first time combining Helium and Hydrogen atoms available in-universe. The pocket of gas in those atomic clouds may have enough gravity to cause the atoms to collect and structure creating a galaxy with billions of stars and a dense black hole in the middle of it.

  

 A star that was sufficiently massive and compact would have such a strong gravitational field that light could not escape such objects are what we now call as black holes, because that is what they are: black voids in space. These are messy eaters, anything that ventures too close-be it a star, planet, or spacecraft will be stretched and compressed like putty in a theoretical process aptly known as spaghettification. 

In this process, their gravitational and magnetic forces superheat the infalling gas and dust, causing it to emit radiation. Some of these glowing matter engulfs the black hole in a whirling region called an "Accretion disk".  Thereby the blackhole extends its lifecycle. The interesting concept is, the space-time notions are interchanged in these voids in space. It has only one direction for space and n respective directions for time isn't that cool?! 

Diving deep in this concept, black holes are briefly described as types: Stellar, Intermediate and Supermassive. 

As stars reach the ends of their lives, the largest of these fiery bodies(10 to 20 times as massive as the sun) is destined to become super-dense neutron stars called as Stellar black holes. 

Supermassive black holes. predicted by Einstein's general theory of relativity, can have masses equal to billions of suns, likely hide at the centers of most galaxies. Milkyway hosts its own supermassive black hole at its centre known as Sagittarius A* that is more than four million times as massive as our sun.

Astronomers also suspect that a class of objects called Intermediate mass black holes exist in the universe.

The boundary of the region from which no escape is possible is called the "Event horizon" which is part one in the black hole and the second is a gravitational "Singularity" which accommodates the huge mass in an infinitely small space, density and gravity turns to infinity and space-time fabric graph wraps to infinity as well.

                                     

The fact is, not every black hole is situated at the center of the galaxy, in fact, our known Milkyway galaxy has an estimation of 10,000 stellar black holes. 

So, is really Sagittarius A* black hole dangerous to our lives in our home galaxy?

Can a black hole take us a trip to another universe?

Do white holes also exist?

To know more information about space and it's happenings kindly be in connection with this blog. 

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