Hawking, who passed away last year, was a theoretical physicist, cosmologist, and author before his death, who served as research director at the University of Cambridge Center for Theoretical Cosmology. His scientific work included a collaboration with Roger Penrose on gravitational singularity theorems in General Relativity and the theoretical prediction that black holes emit radiation, often referred to as Hawking radiation. Hawking was the first to set up a theory of cosmology that was explained by a combination of general relativity and quantum mechanics.
In 2010, Hawking wrote his own Discovery Channel series "Into the Universe with Stephen Hawking," in which The Scientist was voiced by actor Benedict Cumberbatch.
During the show, he tried to explain to viewers how a black hole is created in the cosmos.
He said, "It's hard to imagine how dense a black hole would be, but I'm trying to put it in perspective with something known ̵
"Imagine I could compress our planet bit by bit until gravity takes over and becomes a black hole.
Stephen Hawking made an unexpected discovery
Black holes Scientists Have Long Fascinated
My most unexpected discovery is that a black hole can not be perfectly black
"How small it would be to destroy its own gravitational wormhole ?
"From a diameter of 13,000 kilometers I would have to chop it to the size of a pea."
Hawking admitted, however, that there was one thing that scared him about the space phenomenon.
He added, "In my After Years of Studying Black Holes, my most unexpected discovery is that a black hole can not be perfectly black.
" For the same reason that the early universe is not perfectly laid out there is no perfection.  READ MORE: Stephen Hawking's proposal for the "Black Hole Time Machine" at NASA
The Solar System is a Busy Place
"Black holes must emit radiation, the smaller the black k hole, the larger the radiation."
"But only a tiny black hole with only the mass of one Mountains would actually shine.
"In space, most black holes are much larger."
Hawking went on to explain how different types of black holes exist in space.
He continued, "The smaller ones are about four times the size of our Sun and have a diameter of fifteen miles.
Steven Hawking was a genius
"Some are much larger and contain the mass of thousands of suns.
" And then there really is large, supermassive black holes that exist like ours in the center of galaxies.
[1 9459006] "This black hole [type of] is said to have a mass of four million suns and a diameter of 11 million miles.
"Black holes like these are the heavy hearts of galaxies, including our own Milky Way revolves."
In the second episode, Hawking revealed how NASA revealed one day s could use a black hole for time travel.
Stephen Hawking was a Cambridge professor
He said, "I like to imagine being a spaceship someday Could exploit this spectacular phenomenon.
"Of course, it would first have to be avoided, to be sucked. I think the trick is to just aim to the side so they miss it.
They would have to be at the right trajectory and speed otherwise they would never escape.
"If you do it right, the ship will be put into orbit, a huge circle of 30 million miles in diameter.
"Here it would be safe, its speed would be enough to keep it from falling into it."
Hawking went on to explain how time can be halved by following his theory.
He added, "If a space agency controlled the mission from Earth or anywhere else from the Black Hole, they would observe that each full orbit took 60 minutes.
But for the brave people on board approaching this massive object, time would slow down, and here the effect would be far more extreme than near Earth.  half.
"For each 16-minute orbit they had only eight minutes time.
the time of all far away from the black hole."