5.9 * 10^12 miles/year
*2.2 * 10^6 years = 12.98 * 10^18
= 1.298 * 10^19 I get
The Great Galaxy in Andromeda is about 2200000 light years from Earth. Light travels 5900000000000 miles in a year. How many miles is the Great Galaxy in Andromeda from Earth?
I got 1.298* 10^20 miles.
(This is the exponents unit)
2 answers
Thanks! Calculation error on my part.