לא חשוב גבעה התקדמות how long does it take to travel one light year כף היד רוצח חסר משמעות
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Light-year - Wikipedia
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Capture 3D - #MetrologyMonday One light-year is about 10 trillion kilometers. The Milky Way is about 100,000 light-years, or 1,000,000,000,000,000,000 km across and would take 200,000 years to travel end-to-end at the
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How Long is a Light Year?
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