It's HUGE

There is as much theories as to how the universe started as there are stars in the universe itself. So i will formally stick to the most popular one, The Big Bang. Scientists approximate that a small ball of hydrogen some 13.7 billion years ago had overfilled and exploded, releasing everything we know and love in the universe. A sub theory of this is that quarks and electrons, after the Big Bang, started forming together to make more complex structures. So in a way, everything is made of the same stuff.

There are three basic theories as to what the universe functions like. Those three theories are known as contraction, expansion and limit. The contraction theory argues that space goes on for a certain length and then when it reaches a certain limit, begins to contract on itself. The expansion theory argues that space is just an ever expanding mass that knows no limits. The limits theory argues that space reaches a certain point and simply stops there. These three theories are simply just that, for no man or woman on earth knows exactly how large space is and it's behaviour.

With space comes several dimensions. Humans can experience four of them. The first dimension is a straight and never ending line. The second dimension is a flat interpretation of a third dimension. A third dimension contains volume and depth. The fourth dimension is when an unknown can be two things at the same time. This dimension is a bit harder to grasp but can be proved in an example. When you throw a coin up in the air and catch it with you're hand and put it down on you're wrist nobody is aware of the orientation of the coin, whether it be heads or tails. Since there is no way to prove what it is without looking at it, it's considered to be both heads and tails at the same time.

The mystery of space is never ending. For instance it is absolutely plausible that in our infinitely large universe there will be another race of mobile organisms. This seems hard to wrap around you're head because the universe within itself is infinite and the thought of another life is just a great thought. Another awe of space is the time paradox. When you are looking at a star, you are quite literally looking back in time. This is because the stars are so far away, that the light takes time to travel to the Earth. So in reality you can be looking at a star that might already be burnt out. Another fun fact is that if the sun suddenly burnt out, we would not know until 8.5 minutes, because that is how long it takes the light from the sun to travel to Earth.