moving cluster
/ˌmuːvɪŋ ˈklʌstə/Astronomy
noun
1An open cluster of stars which appear to share a common motion through space, and the distance of which can be determined from measurements of the motions of the individual stars.
2Attributive Designating a method of determining the distance of such a star cluster by observing the radial velocities and proper motions of the individual stars.
Origin
Early 20th century. From moving + cluster.
- radiotherapeutist
- radiotherapist
- radiotherapy
- radiothermal
- radiothon
- radiothorium
- radiotoxic
- radiotoxicity
- radiotracer
- radiotranslucency
- radiotranslucent
- radioulna
- radious
- radio van
- radiovision
- radiovisor
- radio wave
- radio wavelength
- radish
- radish communist
- radish fly
- radish tree
- radishy
- radium
- radium beam