We all have read about space and its expansion; it is spreading a great speed and increasing its area rapidly.
Now, there are many terminology used in this field that is often unexplained to curious brains. This blog is dedicated to the most used phenomenon called GRAVITATIONAL LENSING.
By the name you may correlate it with your optics chapters. At a certain extend you are right. But do you know its applications???
This phenomenon is popularly used to find the definite value of dark matter and dark energy.
Many of you must know about dark matter and energy, but who don’t know for them it is just here.
Dark matter comprises of 26% of UNIVERSE. Dark matter is the matter that neither emits nor radiates light. So it becomes impossible for us to observe it, they are just like invisible objects. They are visible to us only with certain apparatus. But, in such huge space where to find them or where to target those apparatus for dark matter?? Here gravitational lensing works. Since it is not visible so it acts like a transparent sheet and the objects beyond dark matter is visible. Remember that dark matter is not only a matter that is called dark matter, they are of huge variety, many of them are huge popular like black holes. We know that the objects that can’t be seen, shows there presence by interacting with their environment. Let’s take a quick example of air, invisible just omnipresent on Earth. It moves and shows its impact on other objects. In the same way, gravitational lensing works. Since light travel in a straight line but due to high gravitational field of dark matter it bends towards it and performs a magnification which present an enlarged image of the size of the object. In this way from different views we can calculate its composition.
Just for your knowledge. Dark energy comprises of 70% of total universe. And baryonic matter means matter that can be seen like you, me, Earth and all planets, stars and everything. A huge list is ready but still 4%. And a majority is of hydrogen and helium.
There is a lot to explore….if you want to read more space and dark matter and dark energy please check my other blogs on them. And comment down below your views on them and tell us what you want to get investigated by us. Please comment, subscribe and share with all your space friends…..THANKS FOR VISITING…check our other blogs on space.