Question

5. Distance travelled by light in a
vacuum in one tropical year
​

Answer 1

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).

Answer 2

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).

A light-year is the distance a beam of light travels in a single Earth year, or 6 trillion miles (9.7 trillion kilometers).