Isn't modern society great?
With all this technology surrounding us in all directions.
It's like a cocoon of sweet, fluffy silicon.
There are chips in my fitness tracker, my bluetooth headset, mobile phone, car keys
and that's just on my body.
At all times in the Cain household, there dozens of internet devices connected to my
wifi router.
I'm not sure how we got to the point, but there's one thing I know for sure, more
is better.
If I could use two smartphones at the same time, I totally would.
And I'm sure you agree, that without all this technology, life would be a pale shadow
of its current glory.
Without these devices, we'd have to actually interact with each other.
Maybe enjoy the beauty of nature, or something boring like that.
It turns out, that terrible burning orb in the sky, the Sun, is fully willing and capable
of bricking our precious technology.
It's done so in the past, and it's likely to take a swipe at us in the future.
I'm talking about solar storms, of course, tremendous blasts of particles and radiation
from the Sun which can interact with the Earth's magnetosphere and overwhelm anything with
a wire.
In fact, we got a sneak preview of this back in 1859, when a massive solar storm engulfed
the Earth and ruined our old timey technology.
It was known as the Carrington Event.
Follow your imagination back to Thursday, September 1st, 1859.
This was squarely in the middle of the Victorian age.
And not the awesome, fictional Steampunk Victorian age where spectacled gentleman and ladies
of adventure plied the skies in their steam-powered brass dirigibles.
No, it was the regular crappy Victorian age of cholera and child labor.
Technology was making huge leaps and bounds, however, and the first telegraph lines and
electrical grids were getting laid down.
Imagine a really primitive version of today's electrical grid and internet.
On that fateful morning, the British astronomer Richard Carrington turned his solar telescope
to the Sun, and was amazed at the huge sunspot complex staring back at him.
So impressed that he drew this picture of it.
While he was observing the sunspot, Carrington noticed it flash brightly, right in his telescope,
becoming a large kidney-shaped bright white flare.
Carrington realized he was seeing unprecedented activity on the surface of the Sun.
Within a minute, the activity died down and faded away.
And then about 5 minutes later.
Aurora activity erupted across the entire planet.
We're not talking about those rare Northern Lights enjoyed by the Alaskans, Canadians
and Northern Europeans in the audience.
We're talking about everyone, everywhere on Earth.
Even in the tropics.
In fact, the brilliant auroras were so bright you could read a book to them.
The beautiful night time auroras was just one effect from the monster solar flare.
The other impact was that telegraph lines and electrical grids were overwhelmed by the
electricity pushed through their wires.
Operators got electrical shocks from their telegraph machines, and the telegraph paper
lit on fire.
What happened?
The most powerful solar flare ever observed is what happened.
A solar flare occurs because the Sun's magnetic field lines can get tangled up in the solar
atmosphere.
In a moment, the magnetic fields reorganize themselves, and a huge wave of particles and
radiation is released.
Flares happen in three stages.
First, you get the precursor stage, with a blast of soft X-ray radiation.
This is followed by the impulsive stage, where protons and electrons are accelerated off
the surface of the Sun.
And finally, the decay stage, with another burp of X-rays as the flare dies down.
These stages can happen in just a few seconds or drag out over an hour.
Remember those particles hurled off into space?
They take several hours or a few days to reach Earth and interact with our planet's protective
magnetosphere, and then we get to see beautiful auroras in the sky.
This geomagnetic storm causes the Earth's magnetosphere to jiggle around, which drives
charges through wires back and forth, burning out circuits, killing satellites, overloading
electrical grids.
Back in 1859, this wasn't a huge deal, when our quaint technology hadn't progressed
beyond the occasional telegraph tower.
Today, however, it's an entirely different story.
In a second, I'm going to explain why a solar flare as powerful as the Carrington
Event would make for a very bad day in our modern technological society.
But first, I'd like to thank Lew O'Hara, Edward Roberts, Rev Ronald G Cosseboom, John
Duff, and the rest of our 709 patrons for their generous support.
If you love what we're doing and want to help out, head over to patreon.com/universetoday.
Today, our entire civilization depends on wires.
There are wires in the hundreds of satellites flying overhead that we depend on for communications
and navigation.
Our homes and businesses are connected by an enormous electrical grid.
Airplanes, cars, smartphones, this camera I'm using.
Everything is electronic, or controlled by electronics.
Think it can't happen?
We got a sneak preview back in March, 1989 when a much smaller geomagnetic storm crashed
into the Earth.
People as far south as Florida and Cuba could see auroras in the sky, while North America's
entire interconnected electrical grid groaned under the strain.
The Canadian province of Quebec's electrical grid wasn't able to handle the load and
went entirely offline.
For 12 hours, in the freezing Quebec winter, almost the entire province was without power.
I'm telling you, that place gets cold, so this was really bad timing.
Satellites went offline, including NASA's TDRS-1 communication satellite, which suffered
250 separate glitches during the storm.
And on July 23, 2012, a Carrington-class solar superstorm blasted off the Sun, and off into
space.
Fortunately, it missed the Earth, and we were spared the mayhem.
If a solar storm of that magnitude did strike the Earth, the cleanup might cost $2 trillion,
according to a study by the National Academy of Sciences.
It's been 160 years since the Carrington Event, and according to ice core samples,
this was the most powerful solar flare over the last 500 years or so.
Solar astronomers estimate solar storms like this happen twice a millennium, which means
we're not likely to experience another one in our lifetimes.
But if we do, it'll cause worldwide destruction of technology and anyone reliant on it.
You might want to have a contingency plan with some topic starters when you can't
access the internet for a few days.
Locate nearby interesting nature spots to explore and enjoy while you wait for our technological
civilization to be rebuilt.
Have you ever seen an aurora in your lifetime?
Give me the details of your experience in the comments.
In our next episode, what's the bright star in the sky, right next to the Moon.
How come I never noticed that before?
It's Venus, and it's awesome.
The Sun, like the rest of the Universe, wants you dead.
In this video, we detail all the different ways the Sun is trying to kill you.
For more infomation >> The National for Tuesday January 17, 2017 - Duration: 1:00:01. 
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