NASA: SDO space observatory records a huge hole in the Sun

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The Earth is constantly threatened by the Sun and the strange phenomena that occur on it. In what are known as solar cycles, the Sun shows variations in its activity, which modifies the number of sunspots and solar flares. With just over a year to go before the peak of cycle 25, NASA's Solar Dynamics Observatory has observed a huge coronal hole that spews large amounts of matter onto the planet, putting satellites and electrical systems at risk.

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Composite photograph of three filters of the Sun observed by SDO.

Cycle 25

Throughout the last few months, different probes solar observation systems have detected the emergence, formation and evolution of a huge coronal hole that has extended to split the Sun's disk in two. These are zones with a lower temperature than the rest, showing by contrast as dark regions. They are caused by the opening of the magnetic field into space, facilitating the escape of material.

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In November and the beginning of December, the following were detected strong coronal mass ejections that shot large amounts of charged matter at high velocities toward the Earth. Causing auroras up to mid-latitudes, as well as total loss of certain radio frequencies.

More coronal mass ejections are expected to occur in the coming weeks, generating category G1, G2 or even G3 geostorms.. In addition to an apparent steady growth of the coronal hole, which already reaches an extension of more than 800,000 kilometers long, much larger than the Earth.

Francisco Andrés Forero Daza