If the Distance to the Nearest Star Is 4

question 21

Multiple Choice

If the distance to the nearest star is 4.2 light years,what can we conclude about the star?

• A)The star is 4.2 million AU away.
• B)The star's light takes 4.2 years to reach us.
• C)The star must have formed 4.2 billion years ago.
• D)The star must be very young.

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Definitions:

Kenneth Thimann

A renowned botanist and biochemist, best known for his work in plant physiology, particularly in the discovery of auxins, a class of plant growth hormones.

Frits Went

A pioneering scientist in botany renowned for his groundbreaking research on the role of plant hormones in growth and development.

Indoleacetic Acid

A natural auxin, which is a class of plant hormones important for various aspects of growth and development, including cell enlargement, division, and differentiation.

Auxin

A class of plant hormones that play a key role in coordinating growth and behavioral processes in the plant's life cycle, such as cell elongation.