Why Are Cepheid Variables Important

question 27

Multiple Choice

Why are Cepheid variables important?

• A) Cepheid variables are stars that vary in brightness because they harbor a black hole. Therefore, they provide direct evidence for black holes.
• B) Cepheids variables are pulsating stars whose pulsation periods are directly related to their true luminosities. Therefore they can be used as distance indicators.
• C) Cepheids variables are a type of irregular galaxy, much more common in the early universe. Therefore they help to understand how galaxies formed.
• D) Cepheids variables are supermassive stars that are on the verge of becoming supernovae. Therefore they allow us to choose candidates to watch if we hope to observe a supernova.

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Counselling Role

The professional guidance provided by a counselor, focusing on helping individuals resolve personal, social, or psychological challenges.

Palliative Client

A patient receiving palliative care, which focuses on providing relief from the symptoms and stress of a serious illness, emphasizing comfort and quality of life.

Foul Language

The use of offensive, rude, or vulgar words in speech or writing.

Midwifery

The health profession or practice that deals with the care of women throughout pregnancy, childbirth, and the postnatal period.