Mars only has a thin atmosphere, mainly of Carbon Dioxide. This is due to its relatively small mass, where the gravity is too low to sustain a large atmosphere. In addition, the absence of a magnetic field around the planet means that the solar wind can more easily strip any gas away from the planet.
because Mercury has a thin skull
No. Only Venus has a really thick atmosphere. Mars has only a thin atmosphere and Mercury has almost no atmosphere.
It is only a very thin atmosphere, consisting mainly of carbon dioxide.
A thin atmosphere is thin and a thick atmosphere is thick
Pluto sometimes has a temporary thin atmosphere, but only during Pluto's Summer. Pluto entered Summer in 1989 and it will last until 2114.
Eris has a very thin atmosphere
Pluto has a very thin atmosphere.
The only outer planet without a thick atmosphere is Uranus. It has a thin atmosphere composed mostly of hydrogen and helium with traces of methane.
I think the only candidate for this would be Mars, which has a very thin atmosphere made up of 95% carbon dioxide, 3% nitrogen, 1.6% argon,
The atmosphere on Mars is thin because it is 95.72% carbon dioxide.
Mars has a thin, mainly carbon dioxide atmosphere.
Earth has a thin atmosphere. Saturn has a thick atmosphere.