The Solar System Planets in Ord

The Solar System formed 4. 6┬ábillion years ago from the gravitational collapse of a giant interstellar molecular cloud. The vast majority of the system’s mass is in the Sun, with the majority of the remaining mass contained in Jupiter. The four smaller inner planets, Mercury, Venus, Earth and Mars, are terrestrial planets, being primarily composed of rock and metal. The four outer planets are giant planets, being substantially more massive than the terrestrials. The two largest, Jupiter and Saturn, are gas giants, being composed mainly of hydrogen and helium; the two outermost planets, Uranus and Neptune, are ice giants, being composed mostly of substances with relatively high melting points compared with hydrogen and helium, called volatiles, such as water, ammonia and methane. All eight planets have almost circular orbits that lie within a nearly flat disc called the ecliptic.



The new findings are an independent line of evidence that hydrothermal activity is taking place in the subsurface ocean of Enceladus. Earlier results, published in March 2015, indicated hot water is interacting with rock beneath the sea of this distant moon. The new discoveries support that conclusion and add that the rock appears to be reacting chemically to produce the hydrogen. Were you aware of the fact that the moon has a huge impact on fishing? I used to find this hard to believe, but it's true. And you don't have to be a rocket scientist to understand how the moon and fishing fit together. As a matter of fact, by spending about a half an hour educating yourself can pay huge dividends in not only the amount of fish that you catch, but also the size of those fish. All because of the moon, who would have thought? The surface of our Moon's near-side is dominated by the bewildering and unique Procellarum region, and this area is characterized by numerous ancient volcanic plains, low elevations, and a strangely unique composition.