A large and dark “hole” has been opened in the sun’s atmosphere, which allows solar winds to rush out into space, something usual, but spectacular.

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The NASA Solar Dynamics Observatory captured this ultraviolet image of the coronal hole on November 8, with the space agency launching the image.

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The ominous black feature that invades the sun in this ultraviolet image is simply a region of low density in the atmosphere of the star.
Credit: NASA / GSFC / Solar Dynamics Observatory

Wide holes can open in the upper atmosphere of the sun, or corona, as a result of the star’s dynamic magnetic field, according to a NASA statement that accompanied the image. In the same way that the folds and folds of the magnetic field can cause sunspots and solar flares, they can also open temporary holes in the crown. Like the hole in the ozone layer on Earth, a coronal orifice does not pass through the sun’s atmosphere. It is simply a region that is colder and less dense than the surrounding plasma. [The Sun in HD: Amazing Photos by the Solar Dynamics Observatory]

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The opening in the magnetic field allows the particles to escape much faster than in the normal solar wind, according to the Space Weather Prediction Center (SWPC). These high-speed currents can cause disturbances in the Earth’s magnetosphere that endanger satellites and power grids. High-energy particles can also overwhelm the planet’s auroras, the northern and southern lights. This hole was probably the source of vibrant auroras that appeared earlier this month as far south as Nebraska, NASA officials said in the statement.

The coronal orifices will be more likely as the sun approaches the minimum of its 11-year cycle, which will come in 2019. The longer holes, which will also be more likely, can last several rotations of the sun, which take 27 days on average, according to SWPC.

Many of us take the sun for granted, giving little importance until it burns our skin or gets in our eyes. But our star is a fascinating and complex object, a gigantic fusion reactor that gives us life. How much do you know about the sun?

Many of us take the sun for granted, giving little importance until it burns our skin or gets in our eyes. But our star is a fascinating and complex object, a gigantic fusion reactor that gives us life. How much do you know about the sun?


Source : tinsera.info