Peculiar motion or peculiar velocity refers to the true velocity of an object, relative to a rest frame.
Read more about Peculiar Velocity: Galactic Astronomy, Cosmology
Famous quotes containing the word peculiar:
“There are men from whom nature or some peculiar destiny has removed the cover beneath which we hide our own madness. They are like thin-skinned insects whose visible play of muscles seem to make them deformed, though in fact, everything soon turns to its normal shape again.”
—E.T.A.W. (Ernst Theodor Amadeus Wilhelm)