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Gas giant


A gas giant is a giant planet composed mainly of hydrogen and helium. Jupiter and Saturn are ... something of a misnomer, because throughout most of the volume of all giant planets the pressure is s...

What are planets made of?


The other planets are not solid. Jupiter, for instance, is made up mostly of trapped helium, hydrogen, and water. In our solar system, the four "gas giants" are ...

Gas Giants: Facts About the Outer Planets - Space.com


Aug 25, 2015 ... Orbits and sizes are not shown to scale. Credit: NASA. A gas giant is a large planet composed mostly of gases, such as hydrogen and helium, ...

If Jupiter and Saturn are gas giants, could you ... - NASA Space Place


If Jupiter and Saturn are gas giants, could you fly straight through them? ... So it makes sense to think that a gas planet must be like a big, airy cloud floating out in space. ... Scientists do not understand the properties of matter under the extreme  ...

gravity - Is Jupiter made entirely out of gas? - Astronomy Stack ...


Dec 15, 2014 ... So if Jupiter is made out of gas alone, how does it have such high gravity ... Jupiter is mostly not at STP--the pressures are so great throughout the .... A popular theory for the formation of giant planets is that they must begin by ...

In our solar system, why are the gas giant planets considered ...


(photo and quote from Wikipedia) The Eight Planets. "A planet is a stellar remnant that ... You probably think they are huge masses of gas, although they are but not literally. ... The inner most core is made up of metals and hydrogen compounds.

Why is Jupiter called a gas planet? - Windows to the Universe


This is because Jupiter is not a solid planet the way the Earth is. Let's take an ... These clouds are part of Jupiter's thick atmosphere which is made of up gases.

What are the cores of the gas giants made up of? | - About Space


Apr 27, 2013 ... A theory surrounding the formation of giant planets of gas suggests that there is almost definitely a core. This idea is called the bottom-up theory ...

The Planets


Unlike the first four planets, Jupiter is made mostly of frozen gases. These gases ... Pluto is the only planet that has not been visited by any type of spacecraft.

The Inner Planets of Our Solar System - Universe Today


Jun 25, 2016 ... For starters, the inner planets are rocky and terrestrial, composed mostly of silicates and metals, whereas the outer planets are gas giants. ... atmosphere, but it's not just man-made objects that have trouble getting through.

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General Planet Information - Nine Planets for Kids


The rocky planets are mostly made up of rock and metal. These planets are very heavy and move slowly. They also do not have rings and very few moons. GAS ...

Q & A: Planets made of gas | Department of Physics | University of ...


Mercury has a very low-pressure atmosphere. Most of the reason for this is that small planets do not have a gravitational pull strong enough to hold lighter gases  ...

The Outer Planets: Giant Planets: What Are They, and Where Are ...


SUMMARY: The jovian planets are essentially big balls of gas, each ... Made almost entirely of hydrogen and helium, these planets do not have solid surfaces.