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On the 1-to-10-billion scale, about how far is it to the nearest stars besides the sun? on the 1-to-10-billion scale, about how far is it to the nearest stars besides the sun? 400 kilometers 4 kilometers 1,000 kilometers 10,000 kilometers 4,400 kilometers

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egenriether
Not sure what your question means but the nearest star is Alpha Centauri which is about 4.2 light years (ly) away.  This is roughly 4x10¹³ km away.  A billion is 10⁹ so this is 4x10⁴ larger than a billion.  I'd say the last one then...

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