Why do Uranus and Neptune appear blue or blue-green?
A) Traces of methane and other hydrocarbons in their atmospheres
B) Their solid airless surfaces are this colour.
C) Their surfaces are covered with liquid water with no atmosphere.
D) Their atmospheres absorb blue light very efficiently.

Question

Quizplus · Accepted Answer

Methane in the atmospheres of Uranus and Neptune absorbs red light and reflects blue light, giving them their blue or blue-green appearance.

Why Do Uranus and Neptune Appear Blue or Blue-Green