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The Solar System
From our small world we have gazed upon the cosmic ocean for thousands of years. Ancient astronomers observed points of light that appeared to move among the stars... More »

en.wikipedia.org/wiki/Gas_giant

A gas giant is a giant planet composed mainly of hydrogen and helium. Jupiter and Saturn are the gas giants of the Solar System. ... are often combined, hydrogen planets need not be as large as the familiar gas giants from the Solar System.

www.qrg.northwestern.edu/projects/vss/docs/space-environment/2-what-are-planets-made-of.html

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 ...

www.space.com/30372-gas-giants.html

Aug 25, 2015 ... The solar system's outer planets — Jupiter, Saturn, Uranus and Neptune ... A gas giant is a large planet composed mostly of gases, such as ...

solarsystem.nasa.gov/planets/solarsystem/moons

In the outer solar system, the gas giants Jupiter and Saturn and the ice giants Uranus and Neptune have numerous moons. As these planets grew in the early ...

www.spaceanswers.com/solar-system/what-are-the-cores-of-the-gas-giants-made-up-of

Apr 27, 2013 ... What's inside these massive planets? ... which quickly swept up gas from the primordial disk that formed our Solar System to develop a massive ...

lasp.colorado.edu/education/outerplanets/solsys_planets.php

It is worth noticing that the eight planets in our solar system make up two ... Why do objects that formed from the same cloud of gas have different compositions? ... Thus, the inner planets are made almost entirely of rock and metal and form the ...

space-facts.com/gas-giants

The four gas giants in our solar system are Jupiter, Saturn, Uranus, and Neptune. ... is a disk made up of dust, chunks of material (ice, in the outer solar system), ...

lco.global/spacebook/planets-and-how-they-formed

The planets in our Solar System are believed to have formed from the same ... This disc, called the solar nebula, was composed mainly of hydrogen and ... As the gases coalesced to form a protosun, the temperature in the solar system rose.

sciencing.com/planets-gas-planets-8392334.html

Apr 25, 2017 ... The gas giants are a significant presence in our solar system. ... The gas planets are made up almost entirely of gases, primarily hydrogen and ...