Crossword-Solution: BINARIES 8 letters, 1 clue 🏆 scrabble score: 10

Thus displacements of these spectral lines enables us to measure the velocity of the source of light towards or away from the observer.); they are known as spectroscopic binaries.

Instead of a single measure for each star, in the case of the so-called spectroscopic binaries, we must make enough measures to determine the dimensions of the orbit, its form and the period of revolution.

This star was one of the first discovered and most remarkable "spectroscopic binaries." MENKAR (men´kär), α _Oeti_, "the nose, or snout." Situated in the nose of Cetus.

And if not A + B + C, then, perhaps, shall A + B + C combined with D; and so on _ad infinitum_; or in other words that pairs, or binaries, ternaries, quaternaries, and in that mode of progression will furnish keys intricate enough to meet and to decipher the wards of any lock in nature.

Star Spectroscopes--Classification of Stellar Spectra--Type I., with very Few Absorption Lines--Type II., like the Sun--Type III., with Strongly Marked Dark Bands--Distribution of these Classes over the Heavens--Motion in the Line of Sight--Orbital Motion Discovered with the Spectroscope: New Class of Binaries--Spectra of Temporary Stars--Nature of these Bodies.