If a star 100 light years away explodes now, it will be visible to us after (Assume speed of light to be 3x105 km/s)
3.6 X 10⁵ s
3.15 X 10⁹ s
3.15 X 10¹² s
None of the above
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I dont know the answer...but can u gimme ur free fire UID xDD
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