Yards
A unit of length equal to 3 feet; defined as 91.44 centimeters; originally taken to be the average length of a stride
pc =
yd *
Parsecs
The parsec is a unit of length equivalent to around 20 trillion (20,000,000,000,000) miles, 31 trillion kilometres, or 206,264 times the distance from the earth to the sun.
A parsec is also equivalent to approximately 3.26 light years (the journey distance if you travelled at the speed of light for three years and three months).
Tell us what you think of the new site..