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What is Understanding Light-Years and Distances about?
A light-year is the distance light travels in one year, approximately 9.46 trillion kilometers or 5.88 trillion miles. Light-years are used to measure astronomical distances, as traditional units like kilometers and miles are too small for cosmic scales. The speed of light was first estimated by Rømer through observations of Io
- Author
- Kaye Sheendi Opredo
- Language
- EN