Why are the outer planets in our Solar System gassy?
I know they have an iron or rock core, its the gas content I don’t know about.
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Too many burritos.
The term is ‘gaseous’. They are that way because they are large and haven’t had a chance to condense yet. All of the planets are composed of material thrown off of the sun, so the outer planets are more like the sun than the inner planets are, there being more of the mass to them and them being closer to the state the sun is in.
Not all of them are “Gas Giants”.
Jupiter and Saturn are both classified as “Gas Giants”.
Jupiter was just a little too small to become a star. If its volume was to increase around 25%; maybe more, maybe less. it would probably have enough mass to start nuclear fusion.
Nobody knows exactly why they are located where they are.
They are less dense than the inner planets. Saturn can actually float on water (if there were a container big enough). The more dense rocky planets are closer to the sun. Think on things on Earth….more dense things are on Earth surface, less dense things like gases are away from Earth surface. The sun’s gravitational pull is similar. The denser objects are closer.
simply put, because they are more massive, they have more of a gravity to attract more gas than other planets. That’s how the sun formed, too.
The inner planets may have had a huge envelope of gas like the Jovian planets but their proximity to the sun prevented that. The power of the solar wind likely stripped them of their gas. The gas giants are too far away and retained their gas.