Back to Article List From the March 2009 issue What is a parsec? Why do scientists use this unit instead of light-years? Robert Garver, Sanford, Florida By Astronomy Staff | Published: March 23, 2009 | Last updated on May 18, 2023 The parsec is a unit for measuring vast astronomical distances based on the parallax effect.
Science Labor union leader accuses Isaacman of ‘patently false’ statements over Goddard library closure
