Feb 13, 2020 · Light travels at a speed of 186,000 miles or 300,000 km per second. This seems really fast, but objects in space are so far away that it takes a lot of time for their light to reach us. The farther an object is, the farther in the past we see it. Our Sun is the closest star. Therefore, a light second is 186,000 miles 300,000 kilometers. A light year is the distance that light can travel in a year, or: 186,000 miles/second 60 seconds/minute 60 minutes/hour 24 hours/day 365 days/year = 5,865,696,000,000 miles/year. A light year is 5,865,696,000,000 miles 9,460,800,000,000 kilometers. That's a long way! A light-day is a unit of length useful in astronomy, telecommunications, and relativistic physics. It is defined as the distance that light travels in free space in one day or 86,400 light-seconds, and is equal to 2.590206837×10 13 m. A light year is a measurement of distance that signifies how far light travels in one year. The speed of light is 186,000 miles per second or 671 million miles per hour. Determining how long it takes to travel one light year depends in part on the speed of the observer.

Here's how you calculate it. You start with the speed of light, which is about 186,000 miles per second. Then you multiply that by 3,600 seconds in an hour. Then you multiply that by 24 hours in a day. Then you multiply that by 365 days in a year. And you get: 186,000 3,600 24 365 = about 6 trillion miles. Aug 29, 2019 · One light year is equal to 5.8 trillion miles. To calculate this number, use the formula d = c × t, where d is 1 light year, c is the speed of light, and t is the number of seconds in 1 year. The speed of light is equal to.

Jul 31, 2018 · A light-year is the distance light travels in one year. How far is that? Multiply the number of seconds in one year by the number of miles or kilometers that light travels in one second, and there. What is a light-year. and how is it used? Answer: 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.

ANSWER: The light year is based upon Earth years. It would be 10 years. It would take the light 5 years to get to the mirror, and 5 years to travel back. --- So if we doing it today, we will see trough that mirror over 10 years the planet as today.How many Days are in a Year? Days in a year calculation Gregorian calendar year. One calendar common year has 365 days: 1 common year = 365 days. One calendar leap year has 366 days: 1 leap year = 366 days. Leap year occures every 4 years, except for years that are divisable by 100 and not divisable by 400.

A light year is the distance light can travel in one year in a vacuum. This is approximately 5.879 trillion miles 9.461 trillion km. So 10 light years is around 58.79 trillion miles 94.61 trillion km. 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. There's information by state on the annual averages for percent, hours and days of sun. The % Sun number measures the percentage of time between sunrise and sunset that sunshine reaches the ground. Total Hours is the average number of sunny hours a place normally has in a year. Jun 06, 2011 · 3 10^8 m/s / 9.81 ms^-2 = 3.05810^7 seconds which is 11 months 19.35 days remember this is utter rubbish as I said earlier we can't ever attain the speed of light and special relativity makes all of these calculations nonsensical.

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