That Mind Boggling Area We Call Space
A few of my 150-word articles regarding the universe and life.
British spelling
Will black holes ever be truly understood?
Black holes are the densest objects in the known universe.
Their density is mind-boggling. To give an example, hypothetically, the Earth would have to be crunched down to the size of a grape before it became a black hole.
It is thought that there are two trillion galaxies in the observable universe, each holding millions or billions of stars.
Our home galaxy, the Milky Way, has a black hole at its centre named Sagittarius A* with a mass of over 4 million times that of our local star, the Sun. Yes, they are amazing objects.
I mentioned the number of galaxies in the known universe; most scientists are now confident enough to say that most of them will have black holes at their centres.
Why are we here?
Do you ever wonder why we exist?
We can only imagine what our early ancestors were thinking as they gazed up at the night sky. Were they curious as to what the heavens had to hide?
Now it is very different, as we have developed sophisticated telescopes and other specialised scientific instruments that are helping to reveal some of the secrets the universe holds.
Simple life forms were living on our planet at least 3.5 billion years ago; since that time, billions of animal species have existed, and millions of species are still alive today.
The evolutionary path for life has been long, but at last, we have arrived. Our highly developed brain has given us intelligence and curiosity; now we can try and make sense of our existence.
Evolution is a topic that causes plenty of controversy.
Someone said to me, Why are the apes that are around today not turning into humans?
Well, it’s a lot more complicated than that. If the whole human population were wiped out tomorrow, that would be the end of our species forever.
No extinct animals have ever come back; that is sadly the end of the line for them. The non-avian dinosaurs died out 66 million years ago, and as far as I know, there are no signs of them returning.
Evolution is difficult for many people to understand. Our lives are too short to witness the tiny changes that take place in populations.
Primitive life forms were living on our planet well over 3 billion years ago; that is how long it has taken for the human species to arrive.
Cremation or Burial is a difficult choice for most of us.
When we are young that choice is furthest from our minds.
An estimated 117 billion humans have walked the Earth, and roughly eight billion are still alive today, but none of them have escaped death, so there comes a time in our lives when we need to make a choice: cremation or burial.
In all forms of life, atoms are put together in an extremely complex way, widely thought to be the result of evolution. We don’t notice the evolutionary process; our lives are too short to see the tiny changes.
There are 118 known chemical elements on Earth, and only 21 of them make up the human body’s structure.
Please follow my link for a more detailed article on the subject; it might surprise you.
The end