The brightest star in the night sky is Sirius, located [[$ 8.7 $]] light-years away. In the northern sky, you can see the Andromeda Galaxy, located [[$ 2.2 $]] million light-years away. Enter in meters and using the decimal power notation

a) What is the distance between Sirius and Earth?

Sirius' distance to Earth is



b) Distance of the Andromeda galaxy.

The distance of the Andromeda galaxy to Earth is