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  1. quizlet.com › 519323473 › light-years-flash-cardsLight Years Flashcards | Quizlet

    Study with Quizlet and memorize flashcards containing terms like Astronomical Unit (AU), Light Year, Universe and more.

  2. quizlet.com › 72829157 › light-year-study-guide-flash-cardslight year study guide Flashcards | Quizlet

    Study with Quizlet and memorize flashcards containing terms like how far is proxima Centuri from earth?, what does a light year measure, the Universe is made of 3 things and more.

  3. quizlet.com › 185666610 › astronomy-light-year-flash-cardsAstronomy Light Year Flashcards | Quizlet

    Study with Quizlet and memorize flashcards containing terms like Orbit, Celestial Body, Nebulae and more.

  4. quizlet.com › 73986386 › speed-of-light-light-years-and-au-flash-cardsSpeed of Light, Light Years and AU Flashcards | Quizlet

    Study with Quizlet and memorize flashcards containing terms like Speed of Light, Vacuum, Measurement of distance in space in our galaxy - the Milky Way and more.

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

    9 lip 2024 · A light-year is the distance light travels in one Earth year. Learn about how we use light-years to measure the distance of objects in space.

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

    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).

  7. quizlet.com › explanations › questionsWhat is a light-year? | Quizlet

    Light years express the distance of celestial bodies in space, which means that the distance of a star from the Earth will be expressed in light-years and not in other units (kilometers, meters, centimeters).