The next day, October 28, at 1110 UTC, the Sun emitted a massive X17.2 solar flare, which registered third all-time in recorded history. This flare, which came from sunspot 486—at this point, also observable from Earth under proper viewing conditions—also launched a coronal mass ejection (CME) towards Earth at a blazing speed of 2125 km/s, and consequently, an S3 solar radiation storm resulted (Phillips, 28 Oct. and 30 Oct.). However, due to the strength of this event, the SOHO satellite was unable to calculate an accurate density of the flare and CME (Phillips, 28 Oct.). This storm, known as a proton storm, wreaked havoc on the aviation industry, as planes were guided to fly at around 25,000 feet as opposed to 35,000 feet due to radiation exposure concerns (Phillips, 30 Oct; Young). This inconvenience caused higher fuel consumption amounts and thus a higher cost for airlines to operate during this period. Additionally, the SOHO satellite had to be placed into safe mode so it could brace the impact from this flare (Young).
However, the Sun was not finished just yet. On October 29, sunspot 486 ejected yet another solar flare, this time of the X11 variety (Phillips, Oct. 29). Meanwhile, the CME emitted on the 28th hit the Earth in under 18 hours, creating auroras that were vis...
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...m, 29 Oct. 2003. Web. 23 Mar. 2014.
Phillips, Tony. "Spaceweather.com Time Machine." Spaceweather.com Time Machine. SpaceWeather.com, 30 Oct. 2003. Web. 23 Mar. 2014.
Phillips, Tony. "Spaceweather.com Time Machine." Spaceweather.com Time Machine. SpaceWeather.com, 4 Nov. 2003. Web. 23 Mar. 2014.
"SEC Alerts Issued in October 2003." SEC Alerts Issued in October 2003. National Oceanic and Atmospheric Administration, Oct. 2003. Web. 23 Mar. 2014.
"Space Weather Alerts Descriptions." Space Weather Alerts Descriptions. National Oceanic and Atmospheric Administration, 1 Oct. 2007. Web. 23 Mar. 2014.
"What Is SOHO and How Can Society Benefit from Its Science?" SOHO. National Aeronautics and Space Administration, 2014. Web. 23 Mar. 2014.
Young, C. Alex. "X17 Solar Flare and Solar Storm of October 28, 2003 :: The Sun Today." The
Sun Today. N.p., 2013. Web. 23 Mar. 2014.
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