From the intro to “Armageddon”, a 1998 science fiction disaster film:
“At a time when the dinosaurs roamed a lush and fertile planet, a piece of rock just six miles wide changed all that.
It hit with the force of 10.000 nuclear weapons.
A trillion tons of dirt and rock hurled into the atmosphere creating a suffocating blanket of dust.
The sun was powerless to penetrate for a thousand years.
It happened before.
It will happen again.
It’s just a question of when”
The film follows a group of blue-collar deep-sea oil drillers sent by NASA to stop a gigantic asteroid on a collision course with Earth.
In case you’re not worried enough, it doesn’t need to be a “rock”.
Coronal Mass Ejections from the Sun occur as often as 5 times a day. They fly off in all directions.
One, called the “Carrington Event”, hit the Earth in 1851 and fried the Telegraph Grid then in place.(Railroad tracks, too.)
Another just missed Earth in 2012.
There’s a 20% chance of one hitting the Earth within the next 40 years.
Our Power Grid is vulnerable to a CME. Steps to protect it have not been implemented.