1. Calculate the size of the universe (in km), in two ways: a) rate of expansion (120 km/s) multiplied by time since the big bang (14 B yr). b) distance traveled by light between earth and

1.     Calculate the size of the universe (in km), in two ways:a)     rate of expansion (120 km/s) multiplied by time since the big bang (14 B yr).b)     distance traveled by light between earth and the furthest star (45 B light yr),where 1 light yr =  9.4 1012 km. Multiply by 2 for diameter