The Universe in Which We Live

The universe is so large that it is difficult for us to understand with our minds and how good it really is. Scientists estimate that the universe is about 14 billion years and about 46 billion light years in diameter. If you know what a light year is not to try to bring in miles or kilometers , is just too much. If you do not know what a light year is how far light can travel in one year , and is also a very large number. In this article I will try to give some links to help you appreciate how big the universe really is . Let me return to the concept of a light year. When talking about great distances to participate in the cosmos instead of talking to miles scientists speak in terms of light years . As I mentioned earlier , is how far light can travel within a year. Now light travels at a speed of 186,000 miles per second , ( not a time, but a second ) . Then you're probably starting to get the picture you are talking about big numbers and great distances . Just so you can see what it looks like if we translate the speed of light in kilometers per hour Universer Place Peman we are most familiar with 669,600,6000 miles per hour. It is moving along a correct sequence . Just so you do not miss this point , we are talking about 700 million miles per hour. OK , so now we have an idea of ​​the speed of light . They move very fast rogues , these small beams whizzing through space. Compared with the sound speed in fastest route . So when people used to time a 100-meter race with a stopwatch you press the button to see the flash made by the gun not to start sounding the barrel for precise time for the race . When they were 100 meters took too long to reach against the light generated by the flash moving at 186,000 miles per second . Well, if the light is quite fast and how far you can go in a year is a long way. I will create an image in your mind to help make this clearer . The circumference of the Earth is approximately 25,000 miles ( rounded ) . This means that the speed of light , you can travel around the Earth in about 8 times a second ( rounded) . Well, I hope he starts to give you an idea of ​​the speed I'm talking about when you can go around the world 8 times in one second. Therefore, given the period of one year , light can go a long distance . Actually see another number that is too large to really understand if we translate light one year, which is a distance , not a measure of time , the light can go 5,865,696,000,000 miles in a year. 6000000000000 rounded think a little hard to understand if you try to do the final calculation for the size of the universe is miles . It's just too big to comprehend. I 'll try to make an analogy here to try to do something more that you can begin to understand . The Milky Way is the galaxy that Earth is in. The Milky Way is about 200,000 light years across . This is a distance remember, it is not a unit of time. So if light can travel 8 times around the planet in a second and the galaxy is 200,000 light years how long it takes for light to travel from one end of the galaxy to another? If you light a lamp at one end of the galaxy where Christ was born 2000 years ago , this means that the beam has traveled only 1 % over the entire width of the galaxy. Eight times around the earth in a second, but only 1 % through the galaxy in 20 centuries. And there are billions of galaxies in the Universe are billions of times larger than the others and the universe is that all these big marbles are in. Do you have an idea now of a size we talking about? Can you appreciate the size of the Universe? Her speech ? I hope no one is looking.