Which of the following statements does not use the term light-year in an appropriate way? It will take the Voyager spacecraft about 20,000 years to travel just 1 light-year A light-year is about 10 trillion kilometers. It's about 4 light-years from here to Alpha Centauri. It will take me light-years to complete this homework assignment. The Milky Way Galaxy is about 100,000 light-years in diameter.
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It will take me light-years to complete this homework assignment. This statement misuses the term "light-year," which is a measure of distance, not time. It's like saying it will take you kilometers to finish your homework—completely mixing up the concepts! The light-year is a fascinating unit, representing how far light travels in a year—about 9.46 trillion kilometers! This means that when astronomers say something is a certain number of light-years away, they're talking about cosmic distances that are mind-boggling compared to our everyday measurements. Next time you see a star's distance in light-years, just imagine the epic journey light is taking through the universe!
