For Stars That Are Too Distant to Have Measurable Parallaxes

question 28

True/False

For stars that are too distant to have measurable parallaxes, their distances can be estimated from the star's spectral type, luminosity class, and apparent magnitude with a procedure called spectroscopic parallax.

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Definitions:

Edfu

An Egyptian city known for its well-preserved Ptolemaic temple, dedicated to the falcon god Horus, which is one of the best-preserved temples in Egypt.

Temple

A building dedicated to religious or spiritual activities, such as worship and prayer, commonly associated with a particular deity or religion.

Horus

An ancient Egyptian god, typically depicted as a falcon or a man with a falcon's head, representing the sky, war, and hunting, and known as a protector of the pharaoh.

Canon

A rule (for example, of proportion). The ancient Greeks considered beauty to be a matter of “correct” proportion and sought a canon of proportion, for the human figure and for buildings. The fifth-century BCE sculptor Polykleitos wrote the Canon, a treatise incorporating his formula for the perfectly proportioned statue. Also, a church official who preaches, teaches, administers sacraments, and tends to pilgrims and the sick.