Tita Is Smaller in Mass and Somewhat Larger in Size

question 41

Essay

Tita is smaller in mass and somewhat larger in size than the planet Mercury. How can Titan keep a substantial atmosphere while Mercury is virtually airless?

---

Definitions:

Morphine

An opioid analgesic drug derived from opium, used medically to relieve severe or acute pain.

Conditioned Response

A learned response to a previously neutral stimulus that becomes associated with an unconditioned stimulus through conditioning.

Unconditioned Stimulus

A stimulus that naturally triggers a reflexive response without any prior learning.

Salivation

The secretion of saliva, often triggered reflexively by the anticipation or presence of food as a part of the digestive process.