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Boffins tell of solar storm near-miss; 'We'd still be picking up thepieces now'
"On 23 July 2012, two coronal mass ejections (CME) burst out of
the Sun's surface within 15 minutes of each other and headed out into space at more than 3,000km per second. If they had erupted nine days earlier Earth would have been directly in its path. Instead, NASA's Solar Terrestrial Relations Observatory (STEREO) satellite was perfectly positioned to record the blast. For a paper [PDF] in the journal Space Weather, scientists analyzed the data from STEREO and found that the CMEs were the largest yet measured - and could even have exceeded the notorious 1859 Carrington event. Had they hit us, the resulting electromagnetic disturbance could have taken out most of the GPS network, communications satellites, electrical grids and some servers." See: http://www.theregister.co.uk/2014/07...st_one_ week/ & http://science.nasa.gov/science-news...ul_superstorm/ |
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Boffins tell of solar storm near-miss; 'We'd still be picking upthe pieces now'
On Sunday, July 27, 2014 5:19:01 PM UTC-7, wrote:
"On 23 July 2012, two coronal mass ejections (CME) burst out of the Sun's surface within 15 minutes of each other and headed out into space at more than 3,000km per second. If they had erupted nine days earlier Earth would have been directly in its path. Instead, NASA's Solar Terrestrial Relations Observatory (STEREO) satellite was perfectly positioned to record the blast. For a paper [PDF] in the journal Space Weather, scientists analyzed the data from STEREO and found that the CMEs were the largest yet measured - and could even have exceeded the notorious 1859 Carrington event. Had they hit us, the resulting electromagnetic disturbance could have taken out most of the GPS network, communications satellites, electrical grids and some servers." See: http://www.theregister.co.uk/2014/07...st_one_ week/ & http://science.nasa.gov/science-news...ul_superstorm/ Those two CMEs combined could have been worth 1e14 kg. Most individual CMEs are worth something less than 1e13 kg. |
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Boffins tell of solar storm near-miss; 'We'd still be picking upthe pieces now'
In a barely related side note. Thumbing through the cable TV stations last night I happened to land on Pat Robertson's 700 Club that was reporting this very story. After the factual presentation, Mr. Robertson came back on with the opine that "we" barely missed "The End". Well for a broad interpretation of "we" that includes the religious satellite broadcaster CBN, I suppose that interpretation could have been quite true.
Dave |
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