As of the Writing of Your Textbook, What Types of Galaxies

question 28

Multiple Choice

As of the writing of your textbook, what types of galaxies (not including our own Milky Way Galaxy) have been observed to have planets orbiting stars within them?

• A) other spiral galaxies only
• B) elliptical galaxies only
• C) irregular galaxies only
• D) spiral, elliptical, and irregular galaxies
• E) no planets have been observed in other galaxies.

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Definitions:

Physical Activity

Any bodily movement produced by skeletal muscles that require energy expenditure, including activities undertaken while working, playing, carrying out household chores, travelling, and engaging in recreational pursuits.

Exercise

Physical activity that is planned, structured, and repetitive for the purpose of conditioning any part of the body.

Recommended Intensity

The advised level of effort or exertion in physical activity, often expressed as a percentage of maximum heart rate or capacity.

Health-Related Fitness

Components of physical fitness that contribute to the proper functioning of the body's systems and improve health, including cardiovascular fitness, muscle strength, endurance, flexibility, and body composition.