Planets
Almost no atmosphere. The very little atmosphere that exists is composed chiefly of oxygen, sodium, and helium.
Frozen most of the time. When it is closest to the Sun the bright layer of frozen methane, nitrogen, and carbon monoxide thaws out and gives it a thin atmosphere.
Mostly carbon dioxide, nitrogen, and argon.
60 Moons; some have been named and others have alphanumeric designations
Mostly oxygen (21%) and nitrogen (78%). Some argon, carbon dioxide, and water vapor.
1316 times the volume of the Earth. It is the planet with the highest gravity in the solar system.
The methane reflects blue light while it absorbs red light
Consists mainly of carbon dioxide, nitrogen, and droplets of sulfuric acid; it contains almost no water vapor. This thick atmosphere traps immense amounts of heat in a large-scale greenhouse effect.
It is a Gas giant, meaning it is mostly made of the gases hydrogen and helium, with a small amount of methane and traces of water and ammonia. It has no solid surface, but it does contain a liquid core made mostly of “icy” materials (water, methane, and ammonia)