The scattered white spots in the photo that look like stars in the dark night sky may surprise you when you learn about their danger.The truth about mysterious lights.
The image below may look like any other normal photo when you hold your phone up high and take a photo of the night sky.
What exactly are the bright spots in the photo?
What exactly are the bright spots in the photo? (Photo: LOAR/MDR).
But in reality, they are much more special. More precisely, each white dot emitting bright light is actually an active supermassive black hole.
The reason it can emit such light is because each black hole gobbles up material at the center of a galaxy, millions of light years away. This is also the only way for them possible “see” to the naked eye.
There are at least 25,000 low-radio frequency cosmic black holes recorded in the image. To achieve this goal, astronomers had to use the power of two large telescopes in Europe, and their compilation took many years.
“This is the result of many years of searching for data. Obtaining it was extremely difficult,” Francesco de Gasperin, astronomer from the University of Hamburg (Germany), said. “We even had to invent new methods to convert radio signals into images.”
Black holes are mysterious, fascinating, but also extremely frightening objects in the universe.
Black holes are mysterious, fascinating, but also extremely frightening objects in the universe. (Photo: Gettó).
It is known that when black holes are suspended and inactive at high frequencies, they are almost “invisible” because there is no radiation.
On the contrary, when the black hole is active “Material accretion”they will create extremely powerful gravitational forces and radiation at many wavelengths that we can detect from a wide area of space.
What makes the photo above special is that it is covered in extremely low radio wavelengths, called “interference network” (abbreviation: LOFAR). This network includes at least 20,000 radio antennas, spread over 52 sites across Europe.
Currently, LOFAR is the only radio network capable of taking high-resolution depth images at frequencies below 100 MHz, providing the possibility of observing the sky. “only one”.
Black holes – objects that “terrify” the entire universe
Simulation of a black hole absorbing all matter around it
Simulation of a black hole sucking all the matter around it into the “crater”. (Photo: NASA/CXC).
Black hole, or black hole has long been a mysterious concept to humans because, by nature, we cannot see them in a normal way.
Black holes are thought to form when a giant star dies. Once the star’s nuclear fuel is exhausted, the star’s core collapses to become a state of matter 100 times denser than the atomic nucleus, so dense that protons, neutrons and electrons are no longer discrete particles.
Around the black hole is a surface determined by a mathematical equation, called the event horizon. There, once the matter has passed, it will no longer be able to escape from the black hole.
A black hole is called “black” because it absorbs all radiation and matter crossing the event horizon, like a perfect black body in thermodynamics. It is also not a kind of “hole” or “gap” but a zone of space where time, matter or everything cannot escape.
The mysteries surrounding black holes can’t stop scientists in their efforts to decode the universe’s most terrifying “beast.” According to a recent study based on the combination of star formation and binary stars, an estimate of the number of black holes in the universe has been given.
This number will surprise you. Either 40,000,000,000,000,000,000,000 or 40 trillion billion Black holes make up almost 1% of all normal matter in the observable universe.
Article source: Dan Tri
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The scattered white spots in the photo that look like stars in the dark night sky may surprise you when you learn about their danger.
