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Gas giant - Wikipedia


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 ...

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 ...

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.

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  ...

Surface of the Planets - Universe Today


Dec 24, 2015 ... Venus' atmosphere of thick, toxic clouds hides the planet's surface from view. ... is its canals, which early astronomers believed were “man”-made and contained water. ... Jupiter is a gas giant, so it has no solid surface just a core of liquid metals. ... 'Global Warming Hiatus' Not Good News For Planet...

Why are there no liquid planets in our solar system? - Quora


Many elements, particularly abundant ones we find as gases here on earth, are only liquid at .... Even Gas Giants are not made entirely of gas; they have a rocky core, which can be >10 times the mass of Earth. There are planets with entirely ...

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 ...

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.

Planets and How They Formed | Las Cumbres Observatory


This disc, called the solar nebula, was composed mainly of hydrogen and helium, ... explains why the inner planets are rocky and the outer ones are gaseous. ... like water and methane did not vaporize and were able to form the giant planets.

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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, ...

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 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.