We covered that anything past the event horizon can never leave the black hole because of the gravitational pull. This makes it impossible to send in any type of sensor, probe, or brave astronaut inside as there is no way any information or signal could escape the gravity. More significantly, not even light, and its photons, can leave a black hole.

That is why the “surface” of the event horizon looks jet black as all light is absorbed. To be able to see anything, either with our eyes or a camera, the light must travel to the object and bounce off back towards us to get the image.

We can represent the travelling photons as throwing a paper plane in windy weather. The strong wind blowing in one direction will be our gravity. Throwing it with the wind is easy and fast, but if you asked a friend to throw it back to you against the wind, no matter how much force was used, it would probably not get back to you.

Any type of fancy high-tech camera, such as thermal or infrared, that can capture spectrums invisible to the naked eye would also not work. By definition there is nothing that can be taken or pulled out of a black hole, a picture included. And since the event horizon is not a real surface, it also can`t reflect light and be seen.

A black shirt looks black because it absorbs most of the visible light spectrum, which makes up a fraction of all electromagnetic waves. A black hole absorbs the entire electromagnetic spectrum, from radio waves and microwaves all the way to radioactive gamma rays. That is more black than black itself. That means looking at a black hole is the true definition of seeing nothing, as no light can make its way back to your eyes.

Please follow the below links for previous chapters :-

Chapter 1 - Revealing the secrets of Black Hole

Chapter 2 - Observational history of Black Holes

Chapter 3 - If falling into a Black Hole

Chapter 4 - Death by spaghettification of Black Hole

Chapter 5 - Mystery of Monster Black Holes

Chapter 6 - Crossing a wormhole : Reality Or Science fiction

Chapter 7 - Unveiling the Secrets of Biggest Black Hole

Chapter 8 - Gravity Grasp - Exploring Time Dilation Near Black Holes

Chapter 9 - Formation and Evolution of Black Hole

Chapter 10 - Origin of Universe – An Overview of Big Bang

Chapter 11 - The beginning to the end of the universe : How black holes die

Chapter 12 - Are Aliens Living On Planets Inside Black Hole?

Chapter 13 - Black Hole Sgr A_ unmasked