- light-yearastronomy
noun (common) (futsuumeishi)
Generated definitions (experimental)
Wiktionary definitions (experimental)
Example sentences
4 results
This world is a distant three hundred million light years away from the world where you live.
A light-year is the distance light travels in one year. It's 9.5 trillion (9,500,000,000,000) kilometers.
The size of a galaxy may be as little as a thousand light-years across or as much as a million light-years across.