Practice problem
One light-year is approximately 5.9×10125.9\times 10^{12}5.9×1012 miles.
Approximately how far is a light-second?
1.8×10101.8\times 10^{10}1.8×1010 miles
1.9×1051.9\times 10^51.9×105 miles
9.5×10109.5\times 10^{10}9.5×1010 meters
94608000×10894608000\times 10^{8}94608000×108 meters
Type a concept, like “slope” or “photosynthesis”.