The Wavelengths of Light from Very Distant Galaxies Are Shifted

question 28

True/False

The wavelengths of light from very distant galaxies are shifted to the blue part of the spectrum,indicating that the universe is contracting.

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Definitions:

Sub-

A prefix indicating beneath, under, or a lower rank or status.

Poly-

A prefix meaning "many" or "multiple," used in various scientific and technical contexts to denote multiplicity.

Blast

A powerful explosion or a strong gust of wind or air.

Cidal

Used as a suffix in pharmacology and microbiology to indicate substances or actions that kill (e.g., bactericidal, which means capable of killing bacteria).