1光年 ≈ 9.461 × 10¹⁵ m → 1.2光年 = 1.2 × 9.461 × 10¹⁵ ≈ <<1.2*9.461e15=1.13532e16>>1.13532 × 10¹⁶ m - Crosslake
Mar 01, 2026
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