The distance to star a is 2x10^6 light years. The distance to star b is about 5x10^2 light years. Choose which star is father away and write by how much in standard notation
Star A is farther away from us. The difference in distance between the two stars can be written in standard notation as 2x10^6 - 5x10^2 = 2,000,000 - 500 = 1,999,500 light years.
