When you hear the word ‘Universe’, what do you think of? You think of a large and unimaginable expanse of dust, gas, stars, clouds, galaxies, and life. It is difficult to describe it exactly, because no one knows what it actually consists of. There may be many distant worlds in the Universe about which we know nothing. Even every empty space is part of the Universe, and so are matter, time, and energy.
Some scientists say that if you could look at the entire universe at once, it would look like a giant spider web, made up of billions of galaxies, and trillions and trillions of stars. If you find this a bit too much to grasp, don’t worry! Even the greatest scientists have not yet solved the mystery of the Universe!
It is difficult to say how big the Universe is, because we can’t even imagine how big it might be. Our Earth is only a tiny, tiny part of our solar system, and our solar system a tiny part of another system called the ‘galaxy’. Beyond our own galaxy lies a vast expanse of galaxies. There are billions of galaxies, the most dist ant of which are so far away that the light arriving from them on Earth today set out from the galaxies billions of years ago!
Perhaps, all these billions of galaxies put together are still only a tiny part of a larger system.
So, we know that the Universe is bigger than what anyone can imagine, but how much bigger is a quest ion that Man has been asking himself since the beginning of time. The answer is still beyond our grasp, especially as scientists believe that the Universe is still expanding!
So, we know that the Universe is bigger than what anyone can imagine, but how much bigger is a quest ion that Man has been asking himself since the beginning of time. The answer is still beyond our grasp, especially as scientists believe that the Universe is still expanding!
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