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

Thu, 30 Apr 2026 13:24:17 +0000

Content under review