Curious thing crunchbase

1)ACTUAL SPEED OF LIGHT: In the vacuum of the universe, light travels at a speed of 299,792,458 meters (983,571,056 feet) per second. 186,282 miles per second - also called c, or the speed of light - is a universal constant in equations. The majority of modern physics is based on Albert Einstein's theory of special relativity, which states that nothing can travel faster than light. As matter approaches the speed of light, the mass of that matter becomes infinite. As a result, the speed of light is the speed limit of the universe.  The moon is about 1 light-second away from our eyes since light travels from the moon to our eyes in about 1 second. Considering that sunlight takes 8 minutes to reach our eyes, the sun is approximately 8 light-minutes away. Our nearest star system, Alpha Centauri, is 4.3 light-years away. Light from Alpha Centauri takes 4.3 years to reach us, so Alpha Centauri is 4.3 light-years away. One light-year is a distance that can be covered by light in an e...