Origin of proper motion
Words nearby proper motion
How to use proper motion in a sentence
On the variations of the proper motions of Procyon and Sirius.The Planets with the Giant Diamonds Inside - Issue 102: Hidden Truths|Corey S. Powell|July 7, 2021|Nautilus
We need to recover and grow the idea that the proper answer to bad speech is more and better speech.
I wonder what that lady is doing now, and if she knows what she set in motion with Archer?‘Archer’ Creator Adam Reed Spills Season 6 Secrets, From Surreal Plotlines to Life Post-ISIS|Marlow Stern|January 8, 2015|DAILY BEAST
He could deliver a quick, effective speech, or hold a proper press conference.
And so, he says he left prison without proper ID, just his release papers and the “dress-out gear” he was given by the state.His First Day Out Of Jail After 40 Years: Adjusting To Life Outside|Justin Rohrlich|January 3, 2015|DAILY BEAST
The train was already in motion as she tried to step inside, and her body was crushed beneath it.
She herself had worn them in her youth, and they were the proper bonnets for "growing girls."The Pit Town Coronet, Volume I (of 3)|Charles James Wills
That it is a reasonable and proper thing to ask our statesmen and politicians: what is going to happen to the world?The Salvaging Of Civilisation|H. G. (Herbert George) Wells
In this situation we waited the motion of the enemy, without perceiving any advancement they made towards us.
These sections also have vibrations of their own which are of shorter length and more rapid motion.Expressive Voice Culture|Jessie Eldridge Southwick
And this summer it seemed to her that she never would be able to take proper care of her nestful of children.The Tale of Grandfather Mole|Arthur Scott Bailey