All of the Terms in the Drake Equation Are Estimates

question 1

Multiple Choice

All of the terms in the Drake equation are estimates.In the next decade,which of these estimates is likely to improve the most because of better observational data?

• A)number of stars in the Milky Way
• B)fraction of stars with planets
• C)number of planets per star in the habitable zone
• D)fraction of planets where life evolves to intelligence

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Definitions:

Facial Expressions

Visible changes in the face that convey an individual's emotional state, intentions, or social communications.

Favorite Aunt

A term often used to describe an aunt with whom one shares a close and favorable relationship, exceeding typical familial bonds.

Absolute Threshold

The minimum intensity of stimulation required to detect a particular stimulus 50% of the time.

Stimulus

A stimulus is something that causes a response or reaction in an organism or in any of its parts.