Communication -- What it is, and who uses it?
If I were asked to give an example of one thing in the Universe which is a prime example of the word "ubiquitous," it would be "communication."
For our purposes, communication can be defined as the transfer of information by a signal -- a pattern of organized energy. Everything communicates--animate and inanimate objects alike.
You have but to stare into space on a clear night to receive messages sent thousands of years ago from some far away inanimate object--perhaps a distant sun.
It may be just a twinkle of light to you and me.
But in its pattern of electro-magnetic energy, for those who can read it, is enough information to fill a book.
It tells us about the distance of the star from earth, it‰s direction and speed of movement, it's temperature, it's chemical consistency, it's speed of rotation, and more.
Our own sun, among other things, occasionally experiences severe magnetic storms.