A Starburst Galaxy Appears to Be a Galaxy in Which

question 19

Multiple Choice

A starburst galaxy appears to be a galaxy in which

• A) essentially all of the star formation took place in a single,billion-year-long burst early in the life of the galaxy.
• B) a central,supermassive black hole is throwing jets of gas and stars out from the nucleus into intergalactic space.
• C) most of the energy from the galaxy is being produced by supernovae.
• D) a collision with another galaxy has produced a burst of star formation.

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Definitions:

Telomeres

The area at the tips of each chromosome that is reduced to a tiny amount as time passes. By the end of life, the telomeres are very short.

Chromosomes

Long, stringy formations found within the cell nucleus of both animals and plants, composed of proteins and a solitary DNA molecule, responsible for bearing genetic data.

Longevity

The length of an individual's life, often explored in the context of factors that contribute to a prolonged life span.

Selective Optimization

A strategy focusing on maximizing performance in some areas through the selection and optimization of resources, while minimizing losses in other areas.