oxygen and helium
yes
I don't think so.
Most planets that have so far been discovered have had gaseous atmospheres.
There is little difference between controlled and modified atmospheres. They both refer to atmospheres where the proportions of the normal gaseous/vapor components oxygen, nitrogen, carbon dioxide and water vapor, are modified to achieve some storage/packaging goal. This is commonly lowering the oxygen and/or increasing the carbon dioxide. All such atmospheres are modified atmospheres, they become controlled atmospheres when an attempt is made to regulate the composition of one or more of component gases.
Terrestrial planets, like Earth, are small, dense, and composed of rocky surfaces. They have solid surfaces and may have atmospheres but are predominantly rock. Gaseous planets, like Jupiter and Saturn, are much larger, less dense, and predominantly made up of gases like hydrogen and helium. They do not have solid surfaces and are often referred to as gas giants.
Gaseous planets, also known as gas giants, primarily have thick atmospheres composed mainly of hydrogen and helium. They typically lack a solid surface and possess deep, massive atmospheres that can feature complex weather systems and storms. Additionally, they often have multiple moons and ring systems, distinguishing them from terrestrial planets. Examples of gaseous planets in our solar system include Jupiter and Saturn.
Outer planets like Jupiter and Saturn have thick atmospheres composed mostly of hydrogen and helium. Uranus and Neptune have atmospheres rich in frozen ices like water, ammonia, and methane. Strong winds, massive storms, and unique cloud formations characterize the atmospheres of these outer planets.
Gas planets, such as Jupiter and Saturn, are primarily composed of hydrogen and helium, with smaller amounts of other gases like methane and ammonia. These planets lack a solid surface and instead have thick atmospheres that extend many thousands of kilometers into space.
its made out of jaffa cakes
All outer planets in our solar system are gas giants, made up mostly of hydrogen and helium. They have thick atmospheres and lack solid surfaces. Additionally, they all have ring systems and multiple moons.
Terrestrial planets are small, rocky, and have solid surfaces, while jovian planets are large, gaseous, and lack solid surfaces. Jovian planets also have thick atmospheres composed mostly of hydrogen and helium, while terrestrial planets have thinner atmospheres with varying compositions.
all planets are gaseous(made out of gas)EXCEPT Pluto because it does not exist any more