Feb 21, 2020 · The next closest star to us is about 4.3 light-years away. So, when we see this star today, we’re actually seeing it as it was 4.3 years ago. All of the other stars we can see with our eyes are farther, some even thousands of light-years away. Stars are found in large groups called galaxies. A galaxy can have millions or billions of stars. Exactly how long is a light-year? No, this isn't a trick question, but many people might think so. Unlike what the phrase may suggest at first glance, light-year isn't a measure of time - it's a measure of distance. The proper definition of a light-year would be "the distance light travels in a year". A light year is the distance that light travels in one year. The year used by the International Astronomical Union is 365.25 days. Therefore a light year is exactly 9,460,730,472,580.8 kilometers. A kilometer, or kilometre, is a unit of length equal to 1,000 meters.

4 light years is about 3.8 x 1013 km. Dividing that by 100,000 km / hour, we get 3.8 x 108 hours 380,000,000 hours which is about 43,000 years. Related Questions Asked in Planetary Science. Converts from Light Years for you! Instantly Converts Light Years to Light Days and Many More Length Conversions Online. Light Years Conversion Charts. Many Other Conversions. There are 6 trillion miles in a light-year approximately, so the distance we need to go is 6 trillion miles / light-year times 4 light-years, or 24 trillion miles. So, this trip would take 1.2 billion hours. There are 24 hours a day and 365.25 days per year, so this time in years is 137 thousand years. This is a conversion chart for light year Astronomical. To switch the unit simply find the one you want on the page and click it. You can also go to the universal conversion page. 2: Enter the value you want to convert light year. Then click the Convert Me button. Your value gets instantly converted to all other units on the page. 3. A light year is a measurement of distance. This distance is measured by how far light can travel in a year. Light travels at approximately 186,000 miles per second. In one year 365.25 days that is equivalent to 5,869,713,600,000 miles. Example: How far does light travel in 3 months. 3 months is 1/4 year.

Nov 13, 2009 · A light year is a standard of measurement used by astronomers to describe huge distances in the Universe. The nearest star is 4.22 light years away. The center of the Milky Way is. For the sake of this answer, you can say a light year is roughly 5.88 trillion miles in length. The circumference of the earth at the equator is 24,901 miles, and it takes light roughly seven seconds to cover that distance. At that speed you could circle the earth.

Aug 29, 2019 · Since speed of light is represented by the variable “c”, you can rewrite the equation as d = c x t, where d is the distance of a light year, c is the speed of light and t is time. [4] If you want to know the distance of a light year in kilometers, you will need to find the speed of light. Instantly Convert Light Years ly to Miles mi and Many More Length Conversions Online. Light Years Conversion Charts. Many Other Conversions. A light-year is a unit of distance. It is the distance that light can travel in one year. Light moves at a velocity of about 300,000 kilometers km each second. So in one year, it can travel about 10 trillion km. More p recisely, one light-year is equal to 9,500,000,000,000 kilometers.

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