The Brightest, and Closest, Stars to Earth.
The Closest Stars
The Brightest Stars from Earth
1 (Ly) = 63241.07709 (AU) Astronomical Unit
1 (Ly) = 5878625373184 Miles
1 (Ly) = 9460730472581 Kilometres
Light-year: The distance over which light can travel in a year's time in a vacuum, 5.88 trillion miles (9.46 trillion kilometers); -- used as a unit in expressing stellar distances. It is more than 63,000 times as great as the distance from the earth to the sun. The star nearest to the earth's sun is about 4 light years distant.
‣ [Webster 1913 Suppl. +PJC]
Parsec: a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 ly
‣ [The Free On-line Dictionary of Computing 2012]