Then, on Nov. 5, 2013, The sun emitted a significant solar flare, peaking at 5:12 p.m. EST. This flare was classified as an X3.3 flare.
Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however — when intense enough — they can disturb the atmosphere in the layer where GPS and communications signals travel.
One of the larger flares was classified as an X1.0 flare, which peaked at 10:03 p.m. EDT on Oct. 27. \"X-class\" denotes the most intense flares, while the number provides more information about its strength. An X2 is twice as intense as an X1, an X3 is three times as intense, etc. In the past, X-class flares of this intensity have caused degradation or blackouts of radio communications for about an hour.
Another large flare was classified as an M5.1 flare, which peaked at 12: 41 a.m. EDT on Oct. 28. Between Oct. 23, and the morning of Oct 28, there were three X-class flares and more than 15 additional M-class flares.
Increased numbers of flares are quite common at the moment, since the sun is headed toward solar maximum conditions as part of its normal 11-year activity cycle. Humans have tracked this solar cycle continuously since it was discovered in 1843, and it is normal for there to be many flares a day during the sun's peak activity.
The recent solar flare activity has also been accompanied by several coronal mass ejections or CMEs, another solar phenomenon that can send billions of tons of particles into space that can reach Earth one to three days later. These particles cannot travel through the atmosphere to harm humans on Earth, but they can affect electronic systems in satellites and on the ground.", "items": [], "extra_data": {} }, { "id": 345217, "url": "https://svs.gsfc.nasa.gov/11386/#media_group_345217", "widget": "Single image", "title": "", "caption": "", "description": "X3.3 flare from 22:15 UT on Nov 5, 2013. 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It also shows the coronal mass ejections — great clouds of solar material bursting off the sun into space — during that time as captured by the ESA/NASA Solar and Heliospheric Observatory. || ", "release_date": "2013-10-29T16:30:00-04:00", "update_date": "2023-05-03T13:51:33.389694-04:00", "main_image": { "id": 461578, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011387/October_Flares_Still.jpg", "filename": "October_Flares_Still.jpg", "media_type": "Image", "alt_text": "Credit: NASA/ESA/Goddard Space Flight CenterMusic: \"Stella Nova\" by Lars Leonhard, courtesy of the artist and Ultimae Records.Watch this video on the NASAexplorer YouTube channel.For complete transcript, click here.", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 11383, "url": "https://svs.gsfc.nasa.gov/11383/", "page_type": "Produced Video", "title": "Sun Emits Third Solar Flare in Two Days", "description": "The sun emitted a significant solar flare, peaking at 4:01 a.m. EDT on Oct. 25, 2013. Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however — when intense enough — they can disturb the atmosphere in the layer where GPS and communications signals travel. This disrupts the radio signals for as long as the flare is ongoing, anywhere from minutes to hours.This flare is classified as an X1.7 class flare. \"X-class\" denotes the most intense flares, while the number provides more information about its strength. An X2 is twice as intense as an X1, an X3 is three times as intense, etc. In the past, X-class flares of this intensity have caused degradation or blackouts of radio communications for about an hour. Increased numbers of flares are quite common at the moment, since the sun's normal 11-year activity cycle is currently near solar maximum conditions. Humans have tracked this solar cycle continuously since it was discovered in 1843, and it is normal for there to be many flares a day during the sun's peak activity. The first X-class flare of the current solar cycle occurred on February 15, 2011. The largest X-class flare in this cycle was an X6.9 on August 9, 2011. || ", "release_date": "2013-10-25T10:30:00-04:00", "update_date": "2023-05-03T13:51:33.954869-04:00", "main_image": { "id": 461685, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011300/a011383/20131025_080022_4096_0131_crop.jpg", "filename": "20131025_080022_4096_0131_crop.jpg", "media_type": "Image", "alt_text": "X1.7 flare from 4:01am EDT Oct 25 2013, viewed in SDO AIA 131. Cropped.", "width": 2048, "height": 2048, "pixels": 4194304 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }