Order Omega-3 Norway Daily at https://klarity.asia/curiosity-11 Follow us on facebook: / curiositychannelth Blockdit: https://www.blockdit.com/curiositycha... Tiktok: / curiositychannelth Instagram Personal life: / ekarajpkk Contact for work: [email protected] ------------------------------------- Our universe is a very big place. We don't know how big it is. There are many hypotheses talking about this, from a limited size to infinite space. The main reason we don't know the boundaries of the universe is because we can't see it. But this inability is not because our camera technology can't zoom in, but because of the physical laws of the universe. Such as the speed of light in a vacuum, which is a limited value. Light in very far places has not reached us yet, so we still can't see it. Even though light has a very high speed, almost three hundred million meters per second, it has a limited value. The scale on Earth is very short, so it seems that what we see is happening immediately in the present. But in fact, there is a slight delay, but it is so small that our brain doesn't feel that delay. When we see the moon, it is a reflection of the moon. Enter our eyes. It takes light about 1.3 seconds to travel from the moon to our eyes. The image we see now is the moon 1.3 seconds ago. The stars in the sky that we see are images of the stars decades or tens of thousands of years ago. Nothing is a current image because it takes time for light to send image data from its origin to our eyes. Looking into space, very far away, we are not just looking at objects that are very far away. But it's like a time machine that goes back in time. The farther we look, the farther the universe we see in the past. If you want to see the universe 1,000 years ago, look out 1,000 light years. If you want to see the universe a million years ago, look out a million light years. If you want to see the universe when it was young, when it was just formed, look out 13,800 million light years. A light-year is a unit of distance. It is the distance that light travels in a vacuum in 1 year, or about 9.46 trillion kilometers. Therefore, the universe that we can see is smaller than the real universe. It is the area through which light reaches us. It is a sphere with a radius of about 46,500 million light-years. For anything that is further away, light from it has not yet reached Earth. So we still can't see it, even though it's been emitting light since the birth of the universe. We know that our universe has been around for about 13.8 billion years. If we think about it in general terms, the universe that we can observe should be a sphere with a radius of 13.8 billion light years. But why do we say that it has a radius of 46.5 billion light years? Light years? Many people already know that it's because of the expansion of the universe. And in this clip, let's talk about looking at the universe that we can observe in a little more detail. What do the things that we see really mean?