The parsec is the unit of measurement utilized in astronomy to point the distances to stars and galaxies.
One parsec equals roughly 30 trillion kilometers or 19 trillion miles. That is slightly over three light-years.
DISTANCE FROM PARSEC
Launched in 1977, the Voyager 1 spacecraft is the farthest man-made object from Earth, and its distance from Earth in parsec is 0.0006 parsecs.
The Andromeda Galaxy, the closest spiral galaxy to Earth, is at a distance of roughly 800 kiloparsecs to 1,000 parsecs.
MEGAPARSEK AND GIGAPARSEK
For bigger measurements, astronomers use the phrases megaparsec and even gigaparsec. Which means a million and one billion parsecs, respectively.
These measurements are typically used for measurements of enormous formations. The Virgo Cluster, a cluster 1000’s of galaxies past our group, is positioned 16 megaparsecs away from us.