Light travels 9.45 cdot 10^{15}9.45⋅10

15

9, point, 45, dot, 10, start superscript, 15, end superscript meters in a year. There are about 3.15 cdot 10^73.15⋅10

7

3, point, 15, dot, 10, start superscript, 7, end superscript seconds in a year.

Light travels 9.45 cdot 10^{15}9.45⋅10

15

9, point, 45, dot, 10, start superscript, 15, end superscript meters in a year. There are about 3.15 cdot 10^73.15⋅10

7

3, point, 15, dot, 10, start superscript, 7, end superscript seconds in a year.