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
The Ocean Must Be Free The Ocean Must Be Free "The Ocean Must Be Free" is a World War I era song co-written by Dave Kohn & Lew Flint in 1917. The song was published with the caption "Dedicated to the United States Army and Navy to encourage enlistment," on the cover. The first line of the chorus is: "Boys, put on your uniforms." "The Ocean Must Be Free" was reviewed by several news and music publications at the time of its release. "Billboard" said "The Ocean Must be Free is an exceptionally good title for a song at the present time and the words