Black Holes Demystified - Episode 1

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Black Holes Demystified - Episode 1:
The concept of Black Hole was first predicted in 1916 by the famous American physicist, “Albert Einstein”. However, he didn’t name it as ‘black hole’. It was astronomer, “John Wheeler” who coined the term “Black Hole”.
The first black hole, Cygnus X-1, was discovered in 1964. From then on, a great deal of research has uncovered few strange facts about the black holes.
Black holes are extremely dense, with gravitational pull so strong, that even the light can’t escape it.
Scientists define black hole’s outer mass as the “event horizon” and the internal mass as “singularity”.
In the year 2019, the ‘Event Horizon Telescope collaboration’, captured the first image of black hole in the Andromeda galaxy. to release the final image, it took 2 years of research to analyze the data captured by various telescopes by many observations all over the world.
Researchers are now targeting to “photo capture” a silent monster, “Sagittarius A*”, which is a local supermassive black hole in the center of our galaxy.
In 2019, astronomers detected gravitational waves from merging black holes through Laser Interferometer Gravitational-Wave Observatory, in short known as LIGO. The waves were also picked by Virgo observatory in Italy.
The merger was unique because it was happening between two black holes with different mass, and one of them was spinning.
Black hole can’t be seen directly, we can only see its influence especially when it tears down a star by its intense gravitational pull.
Black holes do not have a suction. They don’t suck anything in, instead everything falls inside it, if that is within its ultra-strong gravitational pull.
If somehow you fall inside a black hole, you will die instantly, because the super strong gravity will tear you apart even before you could reach singularity.