by Dan8267 follow (4)
https://www.6Nz-yzZibRk
Even though the name is a little confusing, you probably already know that a light year is the distance that light travels in a full year. At speeds of almost 300,000 kilometers per second that gets you pretty far from home.
#scitech
https://www.6Nz-yzZibRk
#scitech