Suppose We Discover a "Super-Earth" at a Distance of 10AU

question 20

Multiple Choice

Suppose we discover a "super-Earth" at a distance of 10AU from its star.Should we consider it to be potentially habitable?

• A)Yes,its atmosphere may contain substantial amounts of greenhouse-type gases that can keep the planet warm beyond the usual boundaries assumed for habitable zones.
• B)Yes,because its host star must be much bigger in order to have a super-Earth,so it will be much hotter there.
• C)No,only planets at approximately 1AU will ever be potentially habitable.
• D)No,greenhouse gases "freeze-out" at those distances.

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Definitions:

Auditory Convergence

The integration of sound information from both ears at certain points in the auditory pathway, enhancing sound localization and processing.

Refractory Threshold

The refractory threshold is the period following an action potential during which a neuron is incapable of firing another action potential or the threshold is significantly increased.

Difference Threshold

The smallest detectable difference between two stimuli that a person can sense at least half the time.

Just Noticeable Difference

The smallest difference in stimulation that can be reliably detected by an organism.