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A solar flare is a relatively intense, localized emission of electromagnetic radiation in the Sun's atmosphere. Flares occur in active regions and are often, but not always, accompanied by coronal mass ejections, solar particle events, and other eruptive solar phenomena. The occurrence of solar flares varies with the 11-year solar cycle.
Post-eruptive loops in the wake of a solar flare, image taken by the TRACE satellite (photo by NASA). In solar physics, a solar particle event (SPE), also known as a solar energetic particle event or solar radiation storm, [a] [1] is a solar phenomenon which occurs when particles emitted by the Sun, mostly protons, become accelerated either in the Sun's atmosphere during a solar flare or in ...
The image shows light with a wavelength of 304 angstroms. Solar phenomena are natural phenomena which occur within the atmosphere of the Sun. They take many forms, including solar wind, radio wave flux, solar flares, coronal mass ejections, [ 1 ] coronal heating and sunspots. These phenomena are believed to be generated by a helical dynamo ...
The X9 solar flare emitted is the largest categorised by Nasa. The smallest is B, followed by C, M, and X. The scale ranks from 1 to 9, so X9 is the most powerful in Nasa's ranking.
Charlotte Phillipp. October 3, 2024 at 6:46 PM. Authorities predict that states as far south as Oregon and Illinois will be able to see auroras between now and Oct. 6. NASA/SDO. NASA’s Solar ...
The Dec. 14 flare measured as an X2.8, but is far from the strongest recorded by scientists. The largest in the past decade was a X8.2 recorded on Sep 10, 2017, NASA says. Planet survives ...
The March 1989 geomagnetic storm occurred as part of severe to extreme solar storms during early to mid March 1989, the most notable being a geomagnetic storm that struck Earth on March 13. This geomagnetic storm caused a nine-hour outage of Hydro-Québec's electricity transmission system. The onset time was exceptionally rapid. [1]
A coronal mass ejection (CME) is a significant ejection of plasma mass from the Sun's corona into the heliosphere. CMEs are often associated with solar flares and other forms of solar activity, but a broadly accepted theoretical understanding of these relationships has not been established. If a CME enters interplanetary space, it is referred ...