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light year |
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light yearDistance travelled by a beam of light in a vacuum in one year. It is equal to approximately 9.4605 × 1012 km/5.9128 × 10 12mi. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The assembly of galaxies form filaments "millions of light years long and constitute the skeleton of the universe," it said. 2bn light years away has been named as the farthest from Earth ever found. We do find stars with comparable speeds in mature galaxies in today's nearby universe, but those galaxies are typically many tens of thousands of light years across. |
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