Black Holes: The Universe's Dark Secret

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 Introduction

                          If you see the movie Interstellar, You don't need an intro to the Black holes, the enigmatic objects of the vast space. So, how do they form? What will make them the most fearsome things in space? What is Event Horizon? What will happen to us if we cross it and make it inside the black hole? In this blog, we'll try to unravel the mysteries of black holes. 

                         Black holes are some of the strangest and most fascinating objects in space. They are extremely dense, with strong gravitational attraction that not even light can escape their grasp. 

How do Black Holes form?

Black holes are expected to form via two distinct channels. According to the first pathway, they are stellar corpses, so they form when massive stars die. Stars whose birth masses are above roughly 8 to 10 times the mass of our sun, when they exhaust all their fuel - their hydrogen - they explode and die leaving behind a very compact dense object, a black hole. The resulting black hole that is left behind is referred to as a stellar-mass black hole and its mass is of the order of a few times the mass of the sun.

Layers of Black Hole

Black holes have three layers: the outer and inner event horizon, and the singularity. 

The Event Horizon of a black hole is the boundary around the mouth of the black hole, past which light cannot escape. Once a particle crosses the event horizon, it cannot leave. Gravity is constant across the event horizon. 

The inner region of a black hole, where the object's mass lies, is known as its singularity, the single point in space-time where the mass of the black hole is concentrated. 

The first clear image of a black hole was released in 2019

Scientists can't see black holes the way they can see stars and other objects in space. Instead, Astronomers must rely on detecting the relation black holes emit as dust and gas are drawn into the dense creatures. But supermassive black holes, lying in the centre of a galaxy, may become shrouded by the thick dust and gas around them, which can block the telltale emissions. 

Event Horizon - The Place where even mysteries can't unfold

So, most of the people who are space nerds would have definitely searched about black holes and the first question that arises could be what happens to a person or an object that approaches the event horizon of a black hole?.... One Scientist at Harvard University said, "The event horizon is the ultimate prison wall - One can get in but never get out". 

When anything gets near an event horizon, a witness would see the item's image redden and dim as gravity distorts light coming from that item. At the event horizon, this image would effectively fade to invisibility. 

Within the event horizon, one would find the black hole's singularity, where previous research suggests all of the object's mass has collapsed to an infinitely dense extent. This means the fabric of space and time around the singularity has also curved to an infinite degree, so the laws of physics as we currently know them break down. 

Hope you got the essential information regarding black holes. Comment your view on these vast bodies that are still to be known much deeper. 

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