Q243)Why was it necessary to define a new unit to measure distances in the universe What is this unit - Science - Stars and the Solar System

Question

Q243)Why was it necessary to define a new unit to measure
distances in the universe?What is this unit?

Jyoti Pant · Accepted Answer

The distances between objects in space are so vast that a new unit
of measurement of distances was needed This new unit was 'light
year'
One light year is defined as distance covered by light in one year
and 1 light year = 9 46 x1015 m

Q243)Why was it necessary to define a new unit to measure distances in the universe?What is this unit?