Earth Shaker - #AstroMeme How far is far? We often measure distances in space using astronomical units (AU) and light-years (ly) because of the superb distances. 1 Astronomical Unit (AU) - average
LogIQids - #LearnWithLQ - What is a Light Year? Popular misconception makes one believe that a light-year is a unit of time. However, it is an astronomical unit of distance. One light-year
![Should you use light-years or parsecs for astronomical distance? - Sky & Telescope - Sky & Telescope Should you use light-years or parsecs for astronomical distance? - Sky & Telescope - Sky & Telescope](http://skyandtelescope.org/wp-content/uploads/Parallax-Illustration_341px.jpg)