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The Jovian Planets do not have an "surface" as we know it. Since they are composed primarily of hydrogen, ammonia, and methance, these gases gradually compress/condense to a suspended soupy mixture thousands of kilometres below the cloud tops. As one goes deeper, this "soupy" mixture gradually becomes a vast ocean of liquid hydrogen made possible under massive pressure. One can still go deeper and the liquid hydrogen starts to behave like a metal under the fantastic pressure of 10's of thousands of kilometres of atmosphere. That's why Jupiter, especially, as a strong magnetic field. This vast ball of rapidly spinning liquid metallic hydrogen acts like a giant dynamo! It is presumed that each the Jovian Planets each have a rocky core roughly the size of earth.

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Have astronomy been on Jupiter?

Astronomical observations of Jupiter have been made for centuries using telescopes. Several spacecraft missions have also been sent to study Jupiter up close, including the Galileo and Juno missions, which have provided valuable insights into the planet's atmosphere, moons, and magnetic field.


Which moon out of Jupiter's four moons looks the brightest from Jupiters surface?

Io, the innermost of Jupiter's four largest moons, appears the brightest from Jupiter's surface due to its proximity to the planet and its reflective surface.


What planets are large fast moving and made mostly of gases?

The "exoplanets" known as "Hot Jupiters".


What is jupiters surface of gravity compared to the earth?

Jupiter's surface gravity is about 24.79 m/s², which is roughly 2.53 times stronger than Earth's gravity of approximately 9.81 m/s². This means that an object on Jupiter would weigh more than two and a half times what it does on Earth. The immense gravity is due to Jupiter's massive size and composition, primarily made up of gas and liquid.


What would Jupiters moons look like from Jupiters surface?

From Jupiter's surface, its moons would appear as bright points of light in the sky, similar to our view of Jupiter's moons from Earth. They would range in size and brightness depending on their distance from Jupiter and their individual characteristics. The sight would be quite spectacular, with some moons appearing larger than others and potentially casting shadows on Jupiter's surface.