In our solar system, the outer planets, all referred to as gas giants, have no solid outer surface at all, their entire outer envelope is gas; any artifacts visible on them are attributed to local changes in composition or weather effects. Jupiter, Saturn, Uranus and Neptune are all believed to have relatively small solid rocky (silicate) cores, largely similar in composition to the inner planets. Note that due to extreme pressures there are phase changes, for example, on Jupiter there is a thick layer of metallic hydrogen around the core, then a layer of (supercritical) liquid hydrogen; this reflects the physical principle of the correlation of depth and pressure - moving outwards from the core you would note a gradual decrease or a gradient of pressure all the way out to a point where the distinction between the edge of the atmosphere and the beginning of empty space would blur somewhat.
gases
YES
Gases
Hydrogen and other gases.
The outer planets are mostly composed of gases and the inner planets are mostly made of rock, metals.
No. The outer planets do not have solid surfaces. Those planets are made of gases held together by gravity.
No, the planets are composed of gases, except for the cores of the planets which are made up of rock.
While terrestrial planets are made of rock and have gases in the atmosphere, jovian planets are made almost entirly of gases. If an atmosphere is made of gases in a planet, then the atmosphere of the planets with more gases will be thicker.
Type your answer here... all planets are made of gasses
The four inner planets are made of rock . The outer planets are made of various gases and condenced gases. Hydrogen being prominante.
galaxy
it is venus
gases
Nothing
YES
Gases
the inner planets made up of rocks while the outer planets are made up of gases and liquids.