A star whose brightness changes, either irregularly or regularly.
〔天文〕变星
Example sentencesExamples
This type of system is called an eclipsing binary, or an eclipsing variable star.
Cepheid variable stars tend to be extra bright.
They'll also be searching for storms on Mars and Jupiter, monitoring active galactic nuclei, and measuring variable stars.
He discovered the mass-luminosity relationship for stars, he calculated the abundance of hydrogen, and he produced a theory to explain the pulsation of Cepheid variable stars.
The study of variable stars, or just variables, as they are known - is extremely important for understanding the stellar life-cycle.
Definition of variable star in US English:
variable star
nounˈverēəbəl stär
Astronomy
A star whose brightness changes, either irregularly or regularly.
〔天文〕变星
Example sentencesExamples
Cepheid variable stars tend to be extra bright.
This type of system is called an eclipsing binary, or an eclipsing variable star.
He discovered the mass-luminosity relationship for stars, he calculated the abundance of hydrogen, and he produced a theory to explain the pulsation of Cepheid variable stars.
The study of variable stars, or just variables, as they are known - is extremely important for understanding the stellar life-cycle.
They'll also be searching for storms on Mars and Jupiter, monitoring active galactic nuclei, and measuring variable stars.