Radial velocity Radial velocity The radial velocity of an object with respect to a given point is the rate of change of the distance between the object and the point. That is, the radial velocity is the component of the object's velocity that points in the direction of the radius connecting the object and the point. In astronomy, the point is usually taken to be the observer on Earth, so the radial velocity then denotes the speed with which the object moves away from or approaches the Earth. In astronomy, radial velocity is often measured to the first order of approximation by
Be Careful What You Wish For (Archer novel) Be Careful What You Wish For (Archer novel) Be Careful What You Wish For is the fourth novel in Jeffrey Archer's Clifton Chronicles. It was published on 13 March 2014. "Be Careful What You Wish For" follows the Barrington-Clifton family during the years 1957 to 1964, when Emma Barrington Clifton seeks to take control of her family shipping business and must deal with conspiracies and sabotage, opening with Harry Clifton and his wife Emma rushing to hospital to learn the fate of their son Sebastian, who has been involved in a fatal car accident. When she visits the morgue to