The Aurora Borealis (Northern Lights) and Aurora Australis (Southern Lights) are the result of electrons colliding with the upper reaches of Earth’s atmosphere. (Protons cause faint and diffuse aurora, usually not easily visible to the human eye.) The electrons are energized through acceleration processes in the downwind tail (night side) of the magnetosphere and at lower altitudes along auroral field lines. The accelerated electrons follow the magnetic field of Earth down to the Polar Regions where they collide with oxygen and nitrogen atoms and molecules in Earth’s upper atmosphere. In these collisions, the electrons transfer their energy to the atmosphere thus exciting the atoms and molecules to higher energy states. When they relax back down to lower energy states, they release their energy in the form of light. This is similar to how a neon light works. The aurora typically forms 80 to 500 km above Earth’s surface.
Earth’s magnetic field guides the electrons such that the aurora forms two ovals approximately centered at the magnetic poles. During major geomagnetic storms these ovals expand away from the poles such that aurora can be seen over most of the United States. Aurora comes in several different shapes. Often the auroral forms are made of many tall rays that look much like a curtain made of folds of cloth. During the evening, these rays can form arcs that stretch from horizon to horizon. Late in the evening, near midnight, the arcs often begin to twist and sway, just as if a wind were blowing on the curtains of light. At some point, the arcs may expand to fill the whole sky, moving rapidly and becoming very bright. This is the peak of what is called an auroral substorm.
Then in the early morning the auroral forms can take on a more cloud-like appearance. These diffuse patches often blink on and off repeatedly for hours, then they disappear as the sun rises in the east. The best place to observe the aurora is under an oval shaped region between the north and south latitudes of about 60 and 75 degrees. At these polar latitudes, the aurora can be observed more than half of the nights of a given year.
When space weather activity increases and more frequent and larger storms and substorms occur, the aurora extends equatorward. During large events, the aurora can be observed as far south as the US, Europe, and Asia. During very large events, the aurora can be observed even farther from the poles. Of course, to observe the aurora, the skies must be clear and free of clouds. It must also be dark so during the summer months at auroral latitudes, the midnight sun prevents auroral observations
This presence of this badge signifies that this business has officially registered with the Art Storefronts Organization and has an established track record of selling art.
It also means that buyers can trust that they are buying from a legitimate business. Art sellers that conduct fraudulent activity or that receive numerous complaints from buyers will have this badge revoked. If you would like to file a complaint about this seller, please do so here.
Verified Secure Website with Safe Checkout
This website provides a secure checkout with SSL encryption.
Verified Archival Materials Used
The Art Storefronts Organization has verified that this Art Seller has published information about the archival materials used to create their products in an effort to provide transparency to buyers.
Description from Merchant:
WARNING: This merchant has removed information about what materials they are using in the production of their products. Please verify with them directly.
The Live Preview feature requires a modern browser that supports the ability to launch a camera from within a browser. If you believe that your device supports that functionality, you may just need to reload this page to let the browser try to activate your camera again.
The ability to activate your camera in a browser is currently supported by Google Chrome, Mozilla Firefox, and Opera, in both their desktop and Android versions. It is supported by Apple's Safari browser, version 11 and higher. Microsoft’s Internet Explorer has yet to add support for this functionality.
If you cannot get this working, we recommend emailing a link to a compatible device or just use the Wall Preview Tool >>
You must use the Safari browser to use this feature.
The Live Preview feature requires a modern browser that supports the ability to launch a camera from within a browser. Currently, Apple only allows this functionality to occur within the Safari browser. It may allow Chrome and others in the future.
Please open your Safari browser, visit this page again, and you'll be good to go!