Assertion: quasar's light | /r/CapableOf | travel in year
Facets:
Source sentences:
text: An astronomical unit of measure equal to the distance light travels in a year, approximately 5.8 trillion miles.
text: We measure long distances in space in "light-years," representing the distance it takes for light to travel in a year (roughly 5.8 trillion miles, or 9.3 trillion kilometers).