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View Full Version : How Far Is A Light Year in Miles Or Kilometers?



Fraser
2014-Apr-22, 02:20 PM
We hope you have a big suitcase if you’re planning a trip*across the cosmos.*At the speed of light — a speed that no technology yet can achieve — it would take you about four years to get to the Alpha Centauri star system, the nearest group to our own. Zipping to the nearest galaxy, the […]

More... (http://www.universetoday.com/65644/how-far-is-a-lightyear-in-miles/)