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Study with Quizlet and memorize flashcards containing terms like Astronomical Unit (AU), Light Year, Universe and more.
Study with Quizlet and memorize flashcards containing terms like Examine the spectra of the four unknown substances shown below. What can you conclude?, How was helium first discovered?, What star is the coolest? and more.
29 cze 2024 · A) 100 light-years B) 1,000 light-years C) 10,000 light-years D) 100,000 light-years E) 1,000,000 light-years, What kinds of objects lie in the halo of our galaxy? A) open clusters B) O and B stars C) globular clusters D) gas and dust E) all of the above and more.
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!
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.
9 mar 2023 · A light year is the distance that light travels in a year. So it is a measure of distance, not time. Light travels about 300,000 kilometers in one second, or about 9.46 trillion kilometers in one year.
28 maj 2020 · Get the definition of a light year in astronomy. See examples of distances in light years and how the unit compares with parsecs and AU.
