Which of these most closely describes a Mira Variable?
- A variable that is in the constellation of Mensa
- A star that suddenly brightens, dims, then is never as bright again
- A red variable with an extreme change in brightness with a short pulsation period
- A red star that pulsates once more than 100 days and changes by more than a magnitude
Answer
The correct answer is D) A red star that pulsates once more than 100 days and changes by more than a magnitude.
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