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:
“The peculiar evil of silencing the expression of an opinion is, that it is robbing the human race; posterity as well as the existing generation; those who dissent from the opinion, still more than those who hold it. If the opinion is right, they are deprived of the opportunity of exchanging error for truth: if wrong, they lose, what is almost as great a benefit, the clearer perception and livelier impression of truth, produced by its collision with error.”
—John Stuart Mill (1806–1873)