What Is a Cepheid Variable

question 50

Multiple Choice

What is a Cepheid variable?

• A)It is a bright source of variable X-ray emission,thought to harbor a supermassive black hole.
• B)It is a type of very luminous star that makes an excellent standard candle.
• C)It is a main-sequence star of spectral type B5.
• D)It is a type of galaxy that varies in its light output.

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Definitions:

Heterosexual

Pertaining to a sexual orientation characterized by a romantic or sexual attraction to individuals of the opposite sex.

Transgender Status

The state or condition of identifying with a gender that does not correspond to one's assigned sex at birth.

Born

The act or process of being given birth to, indicating the commencement of life.

Intersex

A general term used for a variety of conditions in which a person is born with reproductive or sexual anatomy that doesn't fit typical definitions of female or male.