Question

The quasar known as PKS 0637-752 is 6 billion light-years away from Earth. The North Star is 431 light-years away from Earth. What is the ratio of the distances in kilometers between these two celestial objects are from Earth? (One light-year is equal to 9.46 trillion kilometers.)

Answer 1

It doesn't matter what the conversion from km to light years is because you are dividing something in one units by something else in the same units (they cancel, leaving you with a unit-less ratio)

6billion/431 = 1.39*10^7 or 13,900,000:1

so the quasar is almost 14million times further from us than the North Star.

Answer 2

thanks(:

Answer 3

Your welcome