Auroras. Auroras, the beautiful and often eerie curtains of light in the night skies of the far north and south, have been enjoyed for millennia. In the Northern Hemisphere, they are popularly called Northern Lights, and officially known as "Aurora Borealis" (meaning "northern dawn"); in the Southern Hemisphere, they are known as "Aurora Australis" or the Southern Lights. What do auroras look like? During the luminous phenomenon of an aurora, streams of colorful light appear as reds, greens, yellows, pinks, and purples. Most of the spectacular displays can be divided into one of three dominant forms. In the first form, a homogenous band or arc of light rises across the lower part of the sky from east to west, reaching within a few degrees of the horizon. This band may be just 100 m thick. In the second form, rays stream up vertically from the arc or band like fringes on fine fabric, following the lines of the Earth’s magnetic field.
Do other planets have auroras? How do auroras form? Earthquake prediction science coming out of the Dark Ages in the 21st century? Maybe. Radiation from solar flares reached Earth on Thursday | Truly News. The largest solar flare that has occurred in four years reached Earth on Thursday afternoon, followed by other solar flares on Friday, interfering with radio transmissions, communication and navigation satellites, and some ground-based power grids and communication networks. These flares consist of charged particles which result from coronal mass ejections (CMEs). The Aurora Borealis (northern lights) were also enhanced by the celestial occurrence, and were seen farther south than usual in areas of clear sky. The flares first erupted on Monday, Feb. 14, when magnetic field lines on the surface of the sun allowed for some energy to be released into space.
This has been expected for several years now by astronomers, as it is a normal part of the 11-year activity cycle of the sun. The maximum amount of this type of solar activity is predicted to be in 2013. It took eight minutes for the X-rays from the bursts to reach the Earth, as they travel at the speed of light. Solar flares, coronal mass ejections and aurora borealis in pictures. Solar flares, coronal mass ejections and aurora borealis in pictures. Northern Lights - Moons Wallpaper 152073 - Desktop Nexus Space. Northern Lights Aurora Borealis über Planet Earth Nordhalbkugel Lizenzfreie Fotos, Bilder Und Stock Fotografie. Image 8058196.
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Like its more familiar counterpart, the Aurora Borealis, or Northern Lights, the Aurora Australis is caused by the solar wind passing through the upper atmosphere. But the Aurora Australis is much less frequently observed because so few people live in Antarctica during the austral winter. Photo #1 by Keith Vanderlinde, National Science Foundation This is the Aurora Australis, which dances through the sky virtually all the time during the long Antarctic night over Amundsen-Scott South Pole Station. Aurora – The Struggle. Aurora Australis panorama appearing in the night sky at Swifts Creek, 100km north of Lakes Entrance, Victoria, Australia. Aurora australis captured by NASA’s IMAGE satellite and overlaid onto NASA’s satellite-based Blue Marble image.