Understanding the Vast Size of the Cosmos
We are told that everything we see on Earth and out there in space is the result of 13.8 billion years of evolution.
My articles are not meant for people who have advanced knowledge of astronomy; we are not all experts on the subject.
There are an estimated two trillion galaxies spread throughout the universe.
A trillion is 1 followed by 12 zeros.
As you know, we live in one called the Milky Way. It is now known for sure that most of the galaxies are speeding away from each other, some reaching speeds of many hundreds of thousands, if not millions, of kilometres per hour.
That shows us that the universe is expanding. If you were to reverse that process, all the mass in the universe would eventually end up packed into a very dense single point, and it is thought that it was from that point 13.8 billion years ago that a gargantuan explosion or expansion occurred, commonly known as “the big bang.” That was the beginning of everything we know and see today, including space and time.
If we use our time scale, then there must have been a day without yesterday. If scientists are correct in assuming that time started with the creation of the universe, then that statement must be…
