The Megaparsec (Mpc) scale is necessary when mapping structures on what scale?

Answer

Galaxy clusters.

The megaparsec (Mpc), representing one million parsecs, is used when measuring the vast distances between galaxy clusters.

The Megaparsec (Mpc) scale is necessary when mapping structures on what scale?

#Videos

Units in Astronomy: Explained! - YouTube

SpaceastronomyDistanceunitsMeasurements