From where does Titan's thick, nitrogen-rich atmosphere likely arise?
A) photodissociation of methane and ammonia in its atmosphere
B) emitted by frequent volcanic eruptions
C) deposited by ongoing cometary impacts over the age of the Solar System
D) photosynthesis of algae in oceans that lie beneath its icy surface
E) released from underground reservoirs from early impacts.

Question

Quizplus · Accepted Answer

Titan's thick, nitrogen-rich atmosphere likely arises from photodissociation of methane and ammonia in its atmosphere. Ultraviolet radiation from the Sun breaks down these molecules, releasing nitrogen and creating complex organic molecules, which then form haze particles that make up the thick atmosphere.

From Where Does Titan's Thick, Nitrogen-Rich Atmosphere Likely Arise