Question

distance travelled by light in a vacuum in one tropical year
​

Answer 1

Answer:

Hmmm..........what.......?

Answer 2

Answer:

light-year Unit of astronomical distance equal to the distance travelled in free space or a vacuum by light in one tropical year. One light-year is equal to 9.4607 × 10 12 km (5.88 × 10 12 mi).

thanks......