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Definition of variable star in English: variable starnoun Astronomy A star whose brightness changes, either irregularly or regularly. 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 starnounˈverēəbəl stär Astronomy A star whose brightness changes, either irregularly or regularly. 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.
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