fundamentalz27
New Member
atmosphere when Mercury itself has none A Because of the concentration of gases in the vicinity of a Jovian planet, the moon formed in an unusually dense environment.
B The moon is outgassing its atmosphere, so that the atmosphere is continually regenerated.
C The moons in the outer Solar System are subject to frequent impacts from the icy bodies – the atmosphere can arise from the gaseous materials emitted by these impacts.
D The temperature in the outer Solar System is low enough that the gases in the moon’s atmosphere do not reach escape velocity.
E If the moon formed more recently than Mercury, it may still have its atmosphere but will eventually lose it.
B The moon is outgassing its atmosphere, so that the atmosphere is continually regenerated.
C The moons in the outer Solar System are subject to frequent impacts from the icy bodies – the atmosphere can arise from the gaseous materials emitted by these impacts.
D The temperature in the outer Solar System is low enough that the gases in the moon’s atmosphere do not reach escape velocity.
E If the moon formed more recently than Mercury, it may still have its atmosphere but will eventually lose it.