Astronomical term for a celestial object that emits strong radio waves. Often used interchangeably with 電波天体 (でんぱてんたい).
See also: 電波天体 (でんぱてんたい)
Radio telescopes are used to observe radio stars.
Compound of 電波 (radio wave) and 星 (star), directly translating the English term 'radio star'.