검색
Light-year
01
광년
the distance that light travels in a year
light-year
n
예
ideas that are light-years ahead of their time
Astronomical distances in space are often measured in light-years, the distance light travels in one year.
The farthest galaxy ever observed is located billions of light-years away.
The telescope can observe stars that are deep in the universe, billions of light-years away.
