If there is any place that is fully of mysteries, it is universe. Every day something new is found out. Old theories are scrapped and new theories are put forward and scrapped again. Let us find out the major mysteries of the universe-
1. Is universe expanding or static? If it is expanding as proven by Hubble, will it keep expanding? Or will it one day collapse back? why is irt expanding? What is the force that makes it do so? Where is it expanding? In space that is outer to it? Then is that space not part of the universe? Is it sure that gravity will one day overtake this expansion and cause the collapse of the universe? Is gravity same all around- even at the outer edges or does it increase or decrease?
2. Is it a finite or infinite universe? Currently it is believed that General theory of Relativity proves that it must be finite. If it is finite, can we measure the dimension? what is beyond our finite universe?
3. Are there other universes beyond our universe? Or our universe is the only one? Then where it is located?
4. Why did a singularity exist at the time of Big Bang? Who made that singularity that had infinite mass? Why did that singularity explode and created the universe? What existed before the Big Bang? Should this question be always brushed away saying that let us assume that time began at the moment of Big Bang and we need not worry about what occurred earlier?
5. Is Big Bang a sure thing? Or in coming time will it be proven that universe always existed as it is? Remember for centuries people believed that earth is flat- are we believing in the Big Bang like wise?
One can keep asking questions about the universe. And then somebody will say- let us first remove diseases from the earth and then think about the universe!
