To an Astronomer, What Is a "Standard Candle

question 15

Multiple Choice

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

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

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Definitions:

Final

A keyword in many programming languages used to declare a constant value or to prevent method overriding or inheritance of a class.

Static

In programming, a keyword used to declare variables or methods that belong to the class, rather than any instance of it.

Private

A keyword in object-oriented programming that restricts the visibility of a class member, making it accessible only within its own class.

Method Clone

A method in Java that creates and returns a copy of an object, often overridden to ensure deep cloning of complex objects.