To an Astronomer,what Is a "Standard Candle

question 35

Multiple Choice

To an astronomer,what is a "standard candle"?

• A) A standard light source that can be placed in a telescope,to which the brightnesses of stars and other objects can be compared
• B) Any type of object whose absolute magnitude is known
• C) Any galaxy whose redshift has been measured accurately
• D) An accurately defined brightness scale for stars and galaxies,such as the magnitude scale

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Definitions:

Bundle

A collection of goods or services that are sold together as a single package.

Constants

Fixed values in mathematical equations or experiments that do not change.

Indifference Curves

Graphical representations of combinations of two goods between which a consumer is indifferent.

Avocados

A fruit with a green, creamy texture and rich, nutty flavor, often used in culinary dishes and valued for its health benefits.