What is the distance measurements based on the speed of light used for objects in space?

Distance measurements in space are often expressed in light-years, which is the distance that light travels in one year, about 5.88 trillion miles (9.46 trillion kilometers). Astronomers also use parsecs, where one parsec equals approximately 3.26 light-years, to measure vast distances between celestial objects. These units help convey the immense scales of the universe effectively, given that conventional distance units like kilometers or miles become impractically large.