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Discussion Starter · #1 ·
Check out spaceweather.com for todays headline article for 5/15/21. The site has one flaw, the articles are for today and won't be available later, but it is a great site for all kinds of interesting stuff. Great for kids too.
 

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Discussion Starter · #3 ·
At the bottom of the page is a running list of asteroid encounters. Some of those can be scary.
 

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Fascinating! A big one could cause all kinds of damage.
That's the basis for the concern about a large EMP-- a blast of charged particles travelling near the speed of light would toast any microchip and fry anything with a wire armature (motors. alternators, generators, solenoids). ..It's not known if Faraday cages would actually be of adequate benefit--not to mention that things you want to protect have to be in the cage at the time of the incident.

May 1921 geomagnetic storm - Wikipedia in case the spaceweather article disappears
 

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Discussion Starter · #7 ·
I AM FREAKING THE ----OUT!
You should. In 1972, a solar storm set off all the sea mines the US Navy had deployed in Vietnam's harbors. Some others:
DateEventSignificance
Mar 1582Great magnetic storms of March 1582Prolonged severe-extreme geomagnetic storm produced aurora to 28.8° magnetic latitude (MLAT) and ≈33.0° invariant latitude (ILAT).[31][32]
Feb 1730[33]at least as intense as the 1989 event but less intense than the Carrington event
Sep 1770[34][35]
Sep 1859Solar storm of 1859Also known as the Carrington Event, the most extreme storm ever documented by most measures; telegraph machines reportedly shocked operators and caused small fires; aurora visible in tropical areas; first solidly established connection of flares to geomagnetic disturbances. Extreme storming directly preceded this event in late August.
Feb 1872[36]
Nov 188217-20 November 1882[37]
Oct 1903Solar storm of Oct-Nov 1903[38][39]An extreme storm, estimated at Dst -531 nT arose from a fast CME (mean ≈1500 km/s), occurred during the ascending phase of the minimum of the relatively weak solar cycle 14, which is the most significant storm on record in a solar minimum period. Aurora was conservatively observed to ≈44.1° ILAT, and widespread disruptions and overcharging of telegraph systems occurred.
Sep 1909Geomagnetic storm of September 1909[40]Dst calculated to have reached -595 nT, comparable to the March 1989 event
May 1921May 1921 geomagnetic storm[41]Among most extreme known geomagnetic storms; farthest equatorward (lowest latitude) aurora ever documented; burned out fuses, electrical apparatus, and telephone station; caused fires at signal tower and telegraph station; total communications blackouts lasting several hours. A paper[42] in 2019 estimates intensity of −907±132 nT.
Jan 193825-26 January 1938 geomagnetic storm ("Fátima storm")
Sep 1941[43]
Mar 1946Geomagnetic storm of March 1946Est. Dstm of 512 nT[44][45]
Feb 1956[46][47][48]
Sep 1957Geomagnetic storm of September 1957[49]
Feb 1958Geomagnetic storm of February 1958[49]
Jul 1959Geomagnetic storm of July 1959[49]
May 1967[50]Blackout of polar surveillance radars during Cold War led U.S. military to scramble for nuclear war until solar origin confirmed
Aug 1972Solar storm of August 1972[51]Fastest CME transit time recorded; most extreme solar particle event (SPE) by some measures and the most hazardous to human spaceflight during the Space Age; severe technological disruptions, caused accidental detonation of numerous magnetic-influence sea mines
Mar 1989March 1989 geomagnetic stormMost extreme storm of the Space Age by several measures; outed power grid of province of Quebec
Aug 1989[52]
Nov 1991Geomagnetic storm of November 1991 [53]An intense solar storm with about half the energy output of the March 1989 storm. Aurorae were visible in the US as far south as Texas[54]
Apr 2000[55]
Jul 2000Bastille Day event
Apr 2001[55]
Nov 2001Geomagnetic storm of November 2001A fast-moving CME triggered vivid aurorae as far south as Texas, California, and Florida [56]
Oct 2003Halloween solar storms, 2003[57][58]Among top few most intense storms of the Space Age
Nov 2003Solar storms of November 2003[49]2021 study estimated Dstm of 533 nT[44]
Jan 2005[59][60]
 

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Be powerful. No other option exists.
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Humans have predicted gloom and doom, the apocalypse, the second coming, the end times, the rapture, zombies, a silent spring, and etc., for a looong time.

The sun will come out tomorrow. :love:
 

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It will. Most of us will be here to see it. Maybe our grandchildren will not.
The first of the five "great extinctions" occurred 450M y/a. Since that time, the magnetic poles have flipped over 100 times.

We have a magnetic field around our planet because the molten core, mostly Fe, is sloshing around under the crust at a different rate than the crust itself is moving., producing a field by induction. As the poles drift, they will hit a tipping point, not all that far from their present position, when they will suddenly swap places, the N going to where the S is and vice versa. We won't feel it at all and will only know it because suddenly the blue end of the needle in your compass will now be pointing S instead of N, but will otherwise be unaffected.
 

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Discussion Starter · #15 ·

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Discussion Starter · #16 ·
Unfortunately, when the poles flip the Van Allen belts collapse for a while. That leads to a higher rate of mutations, and sunburns, and cancer.
 

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Unfortunately, when the poles flip the Van Allen belts collapse for a while. That leads to a higher rate of mutations, and sunburns, and cancer.
That flip will be literally instantaneous, so no increase in effective ionizing radiation exposure. There's better things to worry about.
 

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Discussion Starter · #18 ·
That flip will be literally instantaneous, so no increase in effective ionizing radiation exposure. There's better things to worry about.
The flip is not instantaneous, nor does it keep the same strength. The VA belts will take quite a while to re-establish. THe rate of mutations in life forms will increase dramatically.
 

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Coronal mass ejections (CME) operate differently than Elector Magnetic Pulse (EMP) and will damage systems differently. The EMP will fry most unprotected solid state electronics connected to the grid or not. While CMEs make the earths magnetic field oscillate which creates geomagnetic induced current on long conductive lines, like high tension line and the power and phone cable infrastructure which will not damage things that are not plugged into or connected to the grid. CMEs can kill the large step down transformers most of which are custom built and can take over a year to build. BTW: There are no companies in the USA that build large power transformers any more, so they would have to be shipped. As I recall, the govt studied the effect of and EMP on the central USA. The study suggested that approx 100,000,000 Americans would be dead in the first year.
 
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