Is it just an optical illusion of the universe?
high resolution GREGOR image of sunspots, cool dark magnetic storm on the sun.
The sun is a huge, hot ball of charged gas. As the sun goes through its regular 11-year solar cycle, electromagnetic activity on the surface of the star becomes increasingly chaotic. This turbulence inevitably leads to the emergence of sunspots—a magnetic disturbance of the dark planet-sized regions formed in the lower atmosphere of the sun due to strong influence.
For most visible telescopes, sunspots appear to be black. But why do they look like this, are they really black?
It turns out that sunspots are not actually black. Instead, darkness is simply a visual illusion created by contrasting heat from sunspots and their surroundings.
According to the University Atmospheric Research Corporation (UCAR), "sunspots are just darker than bright sun surfaces." "If you can cut a normal sunspot from the sun and place it elsewhere in the night sky, it will be as bright as a full moon ."
These two huge sunspots spread out on the northeast side of the sun.
The reason why sunspots appear is much darker than the visible surface of the sun or other parts of the light sphere is because they are much cooler. According to NASA, the light emitted by the gas under the sunspot is about 25% of the rest of the sun.
Sunspots are still scorching -- Astronomers estimate the temperature of a typical sunspot is about 6,300 degrees Fahrenheit (3,500 degrees Celsius) -- but the surrounding light spheres burn at about 10,000 degrees Fahrenheit (5,500 degrees Celsius) , according to the National Weather Service (NWS).
According to NWS, sunspots are cool because they form in areas with particularly strong magnetic fields -- about 32,500 times stronger than the Earth, and much stronger than anywhere on the sun. This increases the magnetic pressure applied to the sunspots, thereby inhibiting heat from the inside of the sun to the surface, making the area cooler than the surrounding environment.
The suppressed magnetic energy of sunspots can produce some amazing and dangerous side effects. When the magnetic field lines around sunspots become too tangled, they suddenly become new structures, releasing a sudden burst of magnetic energy. This energy can interact with the surrounding plasma -- the hot charged gas that makes up most of the sun -- and produces an energy explosion called solar flare .
Sunspot burstSun flare
Sun flares always occur in active areas near sunspots, which means that the more sunspots there are on the sun at a given time, the greater the possibility of flare bursting. When magnetic activity reaches its peak, sunspots are more likely to appear near the climax of the sun's 11-year activity cycle, also known as " sun maximum ".
The heat generated by the flare in turn triggers another explosion called the coronal mass jet (CME), in which charged solar particles explode directly from the sun's atmosphere and pass through space at high speed.
Most CMEs drive into space harmlessly. But if the Chicago Mercantile Exchange happens to target the Earth, there can be harmful consequences. When the Chicago Mercantile Exchange passes through the Earth's atmosphere, it destroys the grid, causing a radio outage or damage to the satellite ; life on Earth is still protected by the Earth's magnetic field , but astronauts working in space may be subject to higher than normal doses of radiation.
But there is a bright side: When the Chicago Mercantile Exchange (CME) hits the Earth, the rainfall generated by charged particles through our planet's atmosphere causes the aurora to appear at much lower latitudes than usual. To show beautiful colors in the sky of the earth, you can thank a huge black dot on the sun.
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