This man made $2.8 million swing trading stocks from home. So, we multiply that figure by 40 to give a total of 378,421,120,000,000 km. It's exciting news, but it begs the question: just how far away is that? 365.25 light days. Unit Descriptions; 1 Light Day: 1 Light day is 2.590 206 837 12 x 10 13 meters (SI unit). 1 leap year = 366 days. Our Sun is the closest star to us. Please rate this article below. Check the chart for more details. In 2016, NASA's Hubble Space Telescope looked at the farthest galaxy ever seen, called GN-z11. Favourite answer. Unlike what the phrase may suggest at first glance, light-year isn't a measure of time - it's a measure of distance. In recent years, physicists have proposed a possible exception to the nothing-is-faster-than-light rule: it's called "quantum entanglement", and it's a phenomenon that Einstein himself was aware of: he called it "spooky action at a distance". If we divide our distance in km by 62,140 we get 6,089,815,256 hours. How Long is a Light-Year? Each hour has 60 minutes and each minute is 60 seconds long. So, when we see this star today, we’re actually seeing it as it was 4.3 years ago. Investigate shadows, explore what may be seen in the dark and use data loggers to help find the best material to make Teddy some sunglasses. You got a lot of stupid answers to a relatively intelligent question. A.Word.A.Day. That is a 6 with 12 zeros behind it! If you have any feedback on it, All of the other stars we can see with our eyes are farther, some even thousands of light-years away. A galaxy can have millions or billions of stars. One light-year is about 6 trillion miles (9 trillion km). It was Einstein who first demonstrated it theoretically: that light is the fastest thing in the universe, travelling in the vacuum of space at a whopping 300,000km per second (or 186,000 miles per second, depending on which side of the Atlantic you stand). The figures above are based on a Julian year (not Gregorian year) of exactly 365.25 days (each of exactly 86,400 SI seconds, totaling 31,557,600 seconds) and a defined speed of light of 299,792,458 m/s, both included in the IAU (1976) System of Astronomical Constants, used sinc… So 1 light year is a distance of 5.879 x 10 to the 12 miles. Therefore, 1 light-year = 8766 light-hours. You can view more details on each measurement unit: light days or light-year The SI base unit for length is the metre. You also know why that makes light convenient as a unit to measure distances: because it's the fastest thing in the universe, which makes it practical to use it as a baseline to track distance measured over a year in space. Moreover, if the sun was only created on day four, an… This means that we always see the Sun as it was about 8.3 minutes ago. 2. about 5,878,625,373,183.6 miles(about 6 trillion miles). Credit: NASA/JPL-Caltech. One light year is about 6 x 10^12 miles or 1 x 10^13 kilometers. So, we see Andromeda as it was 2.5 million years in the past. In one year there are 365 days of 24 hours. When we use powerful telescopes to look at distant objects in space, we are actually looking back in time. with Anu Garg light-year PRONUNCIATION: (LYT yeer) MEANING: noun: 1. All Free. The year used by the International Astronomical Union is 365.25 days. The answer is 365.25. One light day is about 16 billion (16 x 10^9) miles. If the observer is traveling at the speed of light, then by definition it takes one year. A light-year is the distance light travels in one Earth year. Julian year. To make anything that has *any* mass move as fast as light, it would take a tremendous amount of energy - and this energy would increase in proportion to the mass of the object you're trying to move. Observe and name a variety of light sources, explore materials which allow light through and those that will not. 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