We are human because we can make questions and we can search for answers. We are human because we have humanity and we have curiosity to know our own self and our surrounding all. It starts from our living place home to our village, to City, to country, to continent, to ocean, to Earth, at last Universe.
Either you or me whatever else, it’s true for all man and woman. One kind an uncountable number of questions comes randomly in our mind when we watch and observe our surrounding places and spaces. Those always hit and burn our conscious and unconscious mind wildly, every time. As examples we can mention some of them, why do we exist? Why does the Universe, or the world, exist? How many things are around us and how? Why are we here? Why is there something rather than nothing? How did everything come into existence? When and how did the universe begin? What’s the nature of reality? What are the laws of natures? What’s the relation between laws and nature? What is the origin of laws? Are there any exceptions to laws such as miracles? Then what is miracle? Oh, there are a lot of question, coming, coming and coming. But we know very few of the answers.
So better to say like this, ‘There are more questions than I answer and the more I find out, the less I know.’ (Johnny Nash, Pop Musician).
This kind of fundamental questions originates from everyone’s very early stage of life. But most of the time we can’t keep them up. We lose our curiosity and all kind of interest from them. The reason, we become so busy with our daily life or activity and so that, we haven’t so much time to think about them. But it’s still true when we look into the sky, especially the night sky, then it knocks our mind with one type of wild attraction. Of course this helps us to think like this ‘I would rather understand one cause than be king of Persia.’ (Democritus).
Basically all of answers about the fundamental questions at large come from study of universe. That means study of everything. Universe means everything, our known or unknown. On the other side the study of the universe is Astronomy. It’s having two parts-observational and theoretical, also having some fabulous branches well known as Astrophysics, Cosmology, Astrobiology. Astrophysics is the part of astronomy that deals with the application of physics to an understanding of working of everything in the universe. It works with planets, stars, comets, interstellar objects.
Cosmology and Astrophysics are very similar in technical view because both contain application of physics but principally they are different. It’s area of working with origin and development, evolution, general structure and nature of the universe.
Astrobiology is the study of the origin, evolution, distribution, and future of life in the universe. Those aren’t all it is also for searching existence of life beyond of Earth, and that’s possible formation etcetera. This part is named as Exobiology.
All of them are under of the territory of Astronomy. Of course astronomy itself with all of the branches are working with our most fundamental questions. Astronomy is kind of open an open laboratory as well as library to us. Anyone can research, observe, visit and beyond. The Sky has no bound and Astronomy isn’t limited for some people or someone, it’s open to all.
“When I heard the learn’d astronomer,
When the proofs, the figures, were ranged in columns
When I was shown the charts and diagrams, to add, divide,
and measure them,
When I sitting heard the astronomer where he lectured
With much applause in the lecture-room,
How soon uncountable I became tired and sick,
Till rising and gliding out I wander’d off by myself,
In the mystical moist night air, and from time to time,
Look’d up in perfect silence at the stars.” (Walt Whitman)