light year


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light year

the distance light travels in one year, i.e. 5.9 x1012 miles.
References in periodicals archive ?
The 27,000 light years to the galactic center on our BB-sized solar system scale is more than 40 miles.
The nebula, in the Taurus constellation, is a remnant of a supernova explosion more than 900 million years ago and it measures 10 light years across.
In 1991, the waves reached Zeta Herculis, a multiple star at the southwest corner of the 'keystone' of Hercules 35 light years away.
By comparison, Barnard's star resides 6 light-years away, and our nearest neighbor, at a distance of 4 light years, is the system of three stars collectively known as Alpha Centauri.