In nowadays most of us can't imagine our lives without technology. Especially without the satellites that we need for communications, internet, TV...
Just imagine how would the world look like if most of the electronic devices that we have are useless.
The biggest danger for the satellites are the solar storms.
The latest example came in 2005, when X-rays from a solar flare disrupted satellite-to-ground communication and the GPS system for about 10 minutes — threatening satellite-guided air, sea, and land travel.
But none of those storms come close to the scale of the 1859 monster, known as the Carrington Event.
In 1859, before all that monitoring equipment was put in place, an astronomer spotted the flare before the storm reached Earth.
At 11:18 a.m. on 1st of September that year, the English astronomer Richard Carrington stood in his private observatory recording sunspots on an image of the sun projected through his telescope onto a small screen.
"Two patches of intensely bright and white light broke out," he wrote in his report, "Description of a Singular Appearance seen in the Sun," for the journal Monthly Notices of the Royal Astronomical Society.
"My first impression was that by some chance a ray of light had penetrated a hole in the screen attached to the object-glass, by which the general image is thrown into shade, for the brilliancy was fully equal to that of direct sunlight," wrote Richard.
If a Carrington Event happened today, the world would likely have to deal with the simultaneous loss of GPS, cellphone reception, and much of the power grid. The global aircraft fleet might have to coordinate an unprecedented mass grounding without satellite guidance. Unguarded electronic infrastructure could fail outright.
"Humans in space would be in peril, too," NASA wrote. "Spacewalking astronauts might have only minutes after the first flash of light to find shelter from energetic solar particles following close on the heels of those initial photons. Their spacecraft would probably have adequate shielding; the key would be getting inside in time."
The best available estimates suggest a modern Carrington Event wouldcost humanity $1 trillion to $2 trillion in the first year and take another four to 10 years to achieve full recovery. A 2007 NASA estimate found that the damage to the satellite fleet would cost between $30 billion and $70 billion.
Fortunately, Carrington Event-level storms seem pretty rare, occurring perhaps once in 500 years. But we have no reliable way of predicting when the next one could happen.
