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1. spaceplace.nasa.gov › light-year › enWhat Is a Light-Year? | NASA Space Place – NASA Science for Kids

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   9 lip 2024 · 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! Looking Back in Time. When we use powerful telescopes to look at distant objects in space, we are actually looking back in time. How can this be? Light travels at a speed of 186,000 miles ...

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     A light-year is the distance light travels in one Earth...

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2. www.explainingspace.com › how-long-would-it-take-to-travel-a-light-yearHow Long Would It Take To Travel A Light Year - Explaining Space

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   23 lis 2022 · Imagine, even at this fast pace, it would still take 2,958 years to cover a distance of one light year, a testament to the vastness of space—approximately 5.88 trillion miles (9.46 trillion kilometers).

3. www.youtube.com › watchWhat is a Light Year for Children? 60 Second Science ... -...

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   20 sie 2018 · If you've started learning about space, you've probably heard the term 'light year.'. But what is a light year? Despite how it may sound, a light year is a unit of DISTANCE, and helps us...

4. en.wikipedia.org › wiki › Light-yearLight-year - Wikipedia

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   As defined by the International Astronomical Union (IAU), the light-year is the product of the Julian year (365.25 days, as opposed to the 365.2425-day Gregorian year or the 365.24219-day Tropical year that both approximate) and the speed of light (299 792 458 m/s).

5. science.nasa.gov › exoplanets › what-is-a-light-yearWhat is a light-year? - NASA Science

   science.nasa.gov › exoplanets › what-is-a-light-year

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   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. We use light-time to measure the vast distances of space.

6. www.youtube.com › watchWhat Is a Light Year?? - YouTube

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   16 mar 2019 · A perspective on how fast light travels is given followed by an introduction to the light-year, which is a basic unit of astronomical distances. Duration: 4:45.

7. www.youtube.com › watchWhat exactly is a light-year. Light-year simply explained!

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   A light-year, is a unit of distance often used in astronomy, to measure vast distances in space. It represents the distance that light travels, in a space e...