Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year.
As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year (365.25 days).
People also ask
How many years is a light-year?
How long would it take us to travel in one light-year?
How long would it take to travel 4 light-years?
Is a light-year 365 days?
A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it!
Apr 27, 2023 ˇ A light-year is 5.88 trillion miles (9.46 trillion km). However, stars and nebulae – not to mention distant galaxies – are vastly farther than one light-year ...
Mar 16, 2019 ˇ A perspective on how fast light travels is given followed by an introduction to the light-year ...
Duration: 4:41
Posted: Mar 16, 2019
Duration: 4:41
Posted: Mar 16, 2019
Mar 31, 2023 ˇ A light-year is so much more – it's the distance light travels in one year, which is 5.88 trillion miles (9.46 trillion kilometers).
Dec 22, 2021 ˇ A light-year is the distance a beam of light travels in a single Earth year, which equates to approximately 6 trillion miles (9.7 trillion kilometers).
Sep 20, 2024 ˇ Light-year, in astronomy, the distance traveled by light moving in a vacuum in the course of one year, at its accepted velocity of 299792458 ...
Aug 28, 2023 ˇ Yes, a light year is the distance traveled by light in a vacuum in one Julian year, which is equal to 365.25 days.
1. a unit of length in astronomy equal to the distance that light travels in one year in a vacuum or about 5.88 trillion miles (9.46 trillion kilometers)