Black holes have such a strong gravitational pull that even light can't escape their control.
The phenomenon known as "black holes" made the news this week, and astronomers have captured the first direct evidence of black holes spinning, which, according to multiple sources, provides breakthrough insights into the universe's most mysterious objects.
The first image of a black hole released by scientists: The black hole, called Sgr A*, is a supermassive black hole located at the center of the Milky Way
NASA says black holes are a region in space where gravity is so great that even light can't escape.
"Strong gravity occurs because matter is squeezed into a tiny space. This compression can occur at the end of a star's life. Some black holes are the product of the death of stars. ”
Black holes are one of the strangest and most fascinating objects in space.
According to Space.com reports, they are extremely dense and gravitational, and even light cannot escape their capture.
Black holes were predicted by Albert Einstein in 1915 through general relativity, but according to the European Space Agency, the concept of black holes is actually much older.
In 1784, the British philosopher John Michell said that if light is indeed a stream of particles (as Isaac Newton's theory suggests), then it should be affected by gravity.
Michel also predicted that a star 500 times wider than the sun would have a gravitational field so strong that even light could not escape.
He called these objects "dark stars."
According to Space.com reports, there may be more than 100 million black holes in the Milky Way.
At the center of the Milky Way there is a supermassive black hole: Sagittarius A.
Artist's impression of a runaway supermassive black hole
"This massive structure is about 4 million times the mass of the Sun and about 26,000 light-years from Earth," NASA said.
According to the University of Chicago, black holes are created when massive stars collapse at the end of their lives, and may also occur in other circumstances that the scientific community has not yet identified.
Black holes have two parts.
"A flat horizon, you can think of it as a surface, although it's just a point where gravity is too strong for anything to escape." The other, in the center, is the singularity. The University of Chicago said: "We use this word to describe an infinitely small, infinitely dense point. ”
As mentioned earlier, the concept of black holes is not new – according to the National Air and Space Museum, scientists first theorized the existence of black holes in the early 20th century.
"But our understanding of black holes has grown exponentially over the past few years — from the confirmation of supermassive black holes at the center of galaxies to the first images of black holes taken by the Event Horizon Telescope," the museum noted. ”
This is a picture of a pair of quasars taken by the Hubble Space Telescope, when the universe was only 3 billion years old. They are embedded in a pair of galaxies colliding with each other.
According to NASA, black holes vary in size, but there are three main types.
Mass and size determine what kind of black hole it is.
The smallest black holes are called primordial black holes. According to NASA, scientists believe that this type of black hole is only as small as an atom but as massive as a mountain.
According to NASA, the most common medium-sized black holes are called "stellars," and there may be dozens of stellar-mass black holes in the Milky Way.
Finally, the largest black holes are called "supermassive black holes."
NASA notes that despite theories about black holes in folklore, black holes do not randomly roam the universe and devour the world.
The source also said: "They follow the laws of gravitation, just like other objects in space. It is unlikely that the orbit of a black hole would have to be very close to the solar system to affect Earth. ”
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