Aurora is a natural light display that shimmers in the sky. How did it happen?
Hitekno.com – How does the Aurora occur on Earth? Beautiful colorful light that adorns the sky near the North and South Poles of the Earth. What are the visible colors of the Aurora?
If you have ever seen or been near the North or South Pole, you will probably get a very special sight. Often there is a beautiful light show in the sky. This light is called an aurora. If you are near the North Pole, it is called the aurora borealis or northern lights.
If you are near the South Pole, it is called aurora australis or southern lights. Aurora is a natural light display that shimmers in the sky. Blue, red, yellow, green, and orange light shifted gently and changed shape like a gently blowing curtain. Auroras are only visible at night, and usually only appear in the lower polar regions.
Auroras are visible most nights near the Arctic and Antarctic Circles, which are about 66.5 degrees north and south of the Equator. Then how did Aurora form? The following is an explanation of the process of Aurora occurring, which the HiTekno.com team summarizes for you.
The Process of the Aurora Occurrence
While auroras are best seen at night, they are actually caused by the Sun. The sun sends us more than heat and light; it sends a lot of other energies and tiny particles our way. The protective magnetic field around the Earth protects us from most of the energy and particles, of which we are not aware.
But the Sun doesn’t send out the same amount of energy all the time. There is a constant flow of solar wind and there are also solar storms. During a type of solar storm called a coronal mass ejection, the Sun ejects enormous bubbles of electric gas that can move through space at high speeds.
When a solar storm comes toward us, some of the energy and tiny particles can move along the magnetic field lines at the north and south poles into the Earth’s atmosphere. There, the particles interact with the gases in our atmosphere to produce beautiful displays of light in the sky.
Oxygen gives off green and red light. Nitrogen glows blue and purple. Aurora doesn’t just happen on Earth. If a planet has an atmosphere and a magnetic field, they may have auroras. Several other planets that have aurora phenomena are Jupiter and Saturn.
Aurora color
The color of the aurora varies depending on the height and type of atoms involved. If the ions strike an oxygen atom high in the atmosphere, the interaction produces a red glow. This is an unusual aurora, the aurora for which it is best known, the green-yellow hue, occurs when ions strike oxygen at lower altitudes.
The reddish and bluish glow that often appears on the lower rim of the aurora is produced by ions hitting nitrogen atoms. Ions hitting hydrogen and helium atoms can produce blue and purple auroras, although our eyes can rarely detect this part of the electromagnetic spectrum.
That’s a brief explanation of the process of the aurora on Earth which can add to your knowledge. I hope this information is helpful.
Contributor: Pasha Aiga Wilkins
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