Arvin Ash

What would we see if we fell INSIDE a BLACK HOLE? What's beyond the Event Horizon? (2019x37)

Udgivelsesdato: Aug 10, 2019

What is inside a Black Hole? A black hole is really not a celestial body like a planet or a star. There is really no substance there other than a severely curved space-time. It’a a region in space where matter is condensed to a theoretical infinitely small point – so small in fact that this point effectively disappears from our universe. This is called the gravitational singularity. So if there is nothing there, what does it mean when we talk about different size black holes? When we talk about the size of a black hole, we are really talking about the size of its event horizon. The radius of this event horizon is called the Schwarzschild radius. What happens beyond the event horizon can be ascertained by general relativity, but what happens at the singularity is anyone’s guess. The more massive a black hole is, the less its “density” and the less dangerous it is. Very large black holes like the one at the center of the milky way called Sagittarius A* has about the same density as that of water. You could likely go deep inside Sagittarius A*’s event horizon before tidal forces eventually tore you apart near the singularity. As Adam gets closer to the event horizon, we notice that he speeds up, then he slows down and his space suit appears to get redder and fainter until he disappears from our view. He is still there, but the light reflecting off of him is so red shifted that it is invisible even to our infrared cameras. He would appear to be completely stationary. This is because at the event horizon, from the perspective of the ship, time stops completely. From Adam’s perspective his time is running just fine. Spacetime curves more and more severely as he gets close to the black hole. Looking back, all the light reaching him is being blue shifted. Light that was infra red, not visible to him before, is now in the visible spectrum. And light that was visible before has blue shifted to x-rays, and even gamma rays. Would he be able to se