Gas Giant Interiors Jupiter Jupiter's composition is mainly hydrogen and helium. In contrast to planetary bodies covered with a hard surface crust (the Earth, for example), the jovian surface is gaseous-liquid, rendering the boundary between the atmosphere and the planet itself almost indistinguishable. Below the roughly 1000-kilometer-thick atmosphere, a layer of liquid hydrogen extends to a depth of 20,000 kilometers. Even deeper, it is believed that there is a layer of liquid metallic hydrogen at a pressure of 3 million bars. The planet core is believed to comprise iron-nickel alloy, rock, etc., at a temperature estimated to exceed 20,000C.
Saturn As with Jupiter, Saturn is mainly composed of hydrogen and helium and is observed to be of extremely low density. In fact, Saturn's mean density is only about two-thirds that of water. The Saturn atmosphere comprises, in descending order of altitude, a layer of ammonia, a layer of ammonium hydrogen sulfide, and a layer of ice. Below this, the saturnian surface is a stratum of liquid hydrogen (as in the case of Jupiter) underlain with a layer of liquid metallic hydrogen. It is believed that the liquid hydrogen layer of Saturn is thicker than that of Jupiter, while the liquid metallic hydrogen layer may be thinner. The planet's core is estimated to be composed of rock and ice.
Uranus Uranus is gaseous in composition, mainly comprising hydrogen and helium as in the case of Jupiter and Saturn. The planet atmosphere is mostly hydrogen but also includes helium and methane. The planet core is estimated to be rock and ice encompassed by an outer layer of ice comprised of water, ammonium, and methane.
Neptune The atmosphere of Neptune consists of mainly hydrogen, methane and helium, similar to Uranus. Below it is a liquid hydrogen layer including helium and methane. The lower layer is made up of the liquid hydrogen compounds oxygen and nitrogen. It is believed that the planet core comprises rock and ice. Neptune's average density, as well as the greatest proportion of core per planet size, is the greatest among all the gaseous planets.
Originally posted by CaptChaos
Read his super long treatise on the matter, then try to refute it. He has TONS of evidence.
Of course, you have to accept the premise that people in ancient times were not just insane and making up crazy stories for the hell of it. So, since the ancient texts were not "peer reviewed" you can't just brush them off.
Why would everyone assign such enormous importance to tiny dots in the sky? On all parts of the world? And how would they know that Saturn had rings, and how many moons both Saturn and Jupiter have?
Originally posted by CaptChaos
These are BELIEFS. Not facts. Proves NOTHING.
Originally posted by unitedeufope
This stone carving was found in Iraq near the ancient city of Babylon (Bagdad). Historians may falsely interpret this illustration. There are clearly two suns in the sky and everyone is looking up at them.
edit on 9-1-2013 by unitedeufope because: (no reason given)
Originally posted by broctune
I just read that Saturn is 95 times the size of Earth and that it takes Saturn 29 Earth years to orbit the sun. That's crazy. Not sure about the ideas of the OP, but it did get me thinking about how interesting Saturn is, so S&F.
It is weird that Saturn is the only planet with rings. I read the scientific explanation, but it is definitely a strange anomoly. It's tough to explain away the fact that all other planets are spheres, but this one huge planet has rings around it.
There are actually four planets in our Solar System with rings, although some of the ring systems are so faint that they are hard to spot. These planets – Jupiter, Saturn, Uranus, and Neptune – are all gas giants.