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  1. spaceplace.nasa.gov › light-year › enWhat Is a Light-Year? - NASA Space Place

    9 lip 2024 · For most space objects, we use light-years to describe their distance. 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!

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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

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

    A light-year, alternatively spelled light year ( ly ), is a unit of length used to express astronomical distances and is equal to exactly 9,460,730,472,580.8 km ( Scientific notation: 9.4607304725808 × 10 12 km), which is approximately 5.88 trillion mi.

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

    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.

  5. www.explainingspace.com › how-many-years-is-a-light-yearHow Many Years Is A Light Year? - Explaining Space

    31 paź 2022 · A light year is about 6 trillion miles (9.7 trillion kilometers). In contrast, the distance from Earth to the sun is roughly 93 million miles (150 million kilometers). So, traveling from Earth to the sun covers much less distance than a light year.

  6. www.space.com › light-yearWhat is a light-year? | Space

    22 gru 2021 · A light-year is a measure of astronomical distance: Light travels through a vacuum at precisely 983,571,056 feet (299,792,458 meters) per second, making a light-year approximately 6 trillion...

  7. sciencenotes.org › what-is-a-light-year-definition-and-examplesWhat Is a Light Year? Definition and Examples - Science Notes and...

    28 maj 2020 · The light year is defined as distance light travels in a Julian year (365.25 days). This is slightly different from the Gregorian year (365.2425 days). The Gregorian year is the type of year most of the world uses, based on the Gregorian calendar.