We are told that some stars are light years from our planet.
A light year is distance light can travel in one year, and it's roughly 6 trillion miles.
A light year is the distance light travels in a year. It is calculated by: (speed of light) 3 x 10^8 x 60 x 60 x 24 x 365.35
it is distance that light travels in a year .....obviously it's calculated by calculating distance travelled by light in one year .............. i mean multiplying light's velocity with 365days yeo
