For the universe the speed of light has no units, it's just the speed. But that number (186,282 miles per second or 300,000,000 m/s) is a statement about meters and miles and seconds, not about the universe. A light year is the distance that light travels in one year. It is commonly used to measure the distance between places in the United States and United Kingdom. It's human evolution that picks out the exact number in terms of whatever per second. A mile is a unit of distance equal to 5,280 feet or exactly 1.609344 kilometers. So you see, the speed of light is the number it is because humans are what we are. But it's an enormous amount of time compared to the size of a human: a second of time is 300,000km of distance! The distance and time scales for humans are set by the size of atoms, and biology and chemistry. One second is a human timescale, it's a good standard to measure the time we take to perform a simple tasks or have thoughts. That's not a fault of the universe, it's the fault of our own painfully slow minds. A foot of distance is about equal to what we would call a nanosecond of time. But we experience time excruciatingly slowly compared to the distance scales of our bodies. We compare distances to the extents of our bodies or parts thereof. Now, we as humans experience distances in time and space in wildly discrepant ways. Its human evolution that picks out the exact number in terms of whatever per. Asking why it isn't something else is meaningless, why is 1 not 2? So you see, the speed of light is the number it is because humans are what we are. The speed of light is the speed in our universe. and, theoretically, about 78 billion years to reach us from the edge of the observable universe (this is actually longer ago than the 13.7 billion year age of the universe, because the continued expansion of space has significantly increased the distance the light from these early objects has had to travel).You need to switch your perspective on this question.For a little context, if you were traveling at the speed of light, you would. 59 million years to reach us from the Virgo Cluster, the nearest large galaxy cluster If we are looking at hours, that translates to 670.6 million mph (1.1 billion kmh).2,500,000 to reach us from the Andromeda Galaxy, our next nearest galaxy (and the most distant object visible to the naked eye, although only as a barely perceptible smudge).26,000 years to reach us from the center of our Milky Way galaxy.4.37 years to reach us from Alpha Centauri, the nearest star system to the Solar System (Alpha Centauri is therefore said to be 4.37 light years away).0.0000033 seconds to travel 1 kilometer Miles per second to Light speed table Start Increments Increment: 1000 Increment: 100 Increment: 20 Increment: 10 Increment: 5 Increment: 2 Increment: 1 Increment: 0.1 Increment: 0.01 Increment: 0.As a comparison, sound waves travel at a paltry 343.14 meters per second (about 1,235 kilometers per hour), almost a million times slower than light waves, and the fastest military airplane, the SR-71 Blackbird, can fly at about 980 meters per second (about 3,500 kilometers per hour). Light travels at exactly 299,792,458 meters per second in a vacuum (about 300,000 kilometers per second or just over 1 billion kilometers per hour). (Original Source N/A: /%7Ewudka/Physics7/Notes_www/node65.html) The reasoning used by Rømer in 1675 to determine the speed of light

Random Facts: HOW FAST DOES LIGHT TRAVEL? A Few Random Facts Where in the universe is the Earth? How fast are we traveling through space? How fast does light travel? How far is it to space, the Moon, the Sun, the stars, etc? How many stars are there? How does the Sun shine? What different types of stars are there? What is the human body (and the Earth, the Sun, the Universe) made of? How many molecules/atoms are there in each cubic meter? What if the history of the universe were squeezed into the period of one year? What are the coldest and the hottest objects in the universe? What is the electromagnetic spectrum? What is a planet? What is a dwarf planet? Why do the planets orbit the Sun?

Light in miles persecond