Light from a campfire lit by Roman centurions in the year 100 B.C.E. travels out into space at the speed of light. Which is the farthest of the 20 brightest stars (See Appendix 5, Universe, 11th ed.) beyond which this light will now have traveled?

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The Answer of Light from a campfire lit by Roman centurions in the year 100 B.C.E. travels out into space at the speed of light. Which is the farthest of the 20 brightest stars (See Appendix 5, Universe, 11th ed.) beyond which this light will now have traveled?

Light from a Campfire Lit by Roman Centurions in the Year