Can we walk on a gaseous planet?

Can we walk on a gaseous planet?

Within the solar system, four planets are gaseous, that is to say that they are made up partly of hydrogen and helium. These planets are called the “gas giants” or the “Jovian planets”, in reference to Jupiter.

Half of the planets in our solar system are so-called gaseous planets. This is the case of Jupiter, Saturn, Uranus and Neptune. These are the farthest planets from the sun. Earth, Mars, Venus and Mercury are rocky planets, also called “telluric planets”. They are made up of various rocks and minerals found in three concentric envelopes: the crust, the mantle and the core. Gaseous planets are huge balls of gas much larger than telluric planets. Each has its particularities.

What exactly is a gaseous planet?

A gaseous planet is largely composed of gas, but it still has a hard core, even if it is very small. The further one goes towards the center of a gaseous planet, the more the pressure of the gases increases and the temperature becomes extreme. There are two types of gaseous planets in the solar system. Jupiter and Saturn fall into the first category. These are two planets made up largely of two light gases, hydrogen and helium, which are found over thousands of kilometers in thickness. Uranus and Neptune are “ice giants”, as they would have a thick layer of ice made of water, ammonia and methane, and would only have 20% gas (hydrogen and helium) in their composition.

Walking on a gaseous planet, is it possible?

It is not possible to walk on a gaseous planet like Jupiter, Saturn, Uranus or Neptune. If you set foot on the “surface” of one of these planets, you would sink directly into it. The descent would last on Jupiter or Saturn until being crushed by increasingly strong pressure as the center approaches, on Neptune or Uranus until experiencing extremely low temperatures. They are therefore planets where life cannot develop. It is therefore not possible to walk on a gaseous planet, even if one can theoretically cross it. However, as no ship can withstand this crossing, we still have incomplete knowledge of the exact composition of these “gas giants” and “icy giants”.

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