Astronomy_1_Final_Study_Notes - Outer planets and Pluto All...

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Outer planets and Pluto. All the outer planets are Jovian and planets gas giants. Jupiter is 11 times the size of the Earth and has more than 60 moons. 1000 Earth’s would fit inside. As a planet it represent 70% of total mass of all eight planets produces its own might buy size if it was only 75 times larger. It could be a star contracts by his own gravity. By its fast rotation. Its weather patterns are extremely fast. Bands are created by winds traveling in opposite directions. Galilean looms are largest is 66 moons, in order of largest to smallest; Io, Europa, Ganymede, Callisto. Io It’s completely molten surface of lava with 300 volcanoes. Most volcanically active body in solar system. Like our moon causes tides by gravity Jupiters gravity flexes the moon to heat and cause eruptions. Europa, Ganymeded and Callisto all I see due to being farther away, all heated inside to perhaps have liquid oceans underneath and bacteria. Saturn is 9 ½ times the size of Earth and has more than 30 named moons. Uranus is four and a half times the size of the Earth and has more than 20 moons. Net tune is 4 ½ times the size of the Earth and has more than 10 moons. Saturn is the second largest planet and is the lowest density planet. 70% of water so it would float in water. Fast rotator so it is the least elliptical planet. The rings of Saturn are the most elaborate made up of ice and dust. Theories 1) Moon destroyed in solar system formation. 2) Moon destroyed by Saturn’s gravity. The dark rings, Cassini. There are moves inside the rings, causing gaps and keeps particles inside rings. Moons of Saturn, Mimas – death Star with crater, Emceladus with Cassini probe in 2005 discovered geysers on the moon of water vapor and organic compound. This is caused by tidal forces of Saturn’s gravity. Uranus gas giants of helium hydrogen and 2% methane, which gives it its blue color. First planet discovered by telescope by William Hereckel in 1781. Has 98% tilt. So one side has light for half of its orbit around the sun and the orbit is 84 years. So for 42 years, one site has light. Neptune 3% helium mostly hydrogen and helium a dark spot observed in 1994 had disappeared and now a new one appeared in the Northern Hemisphere. Discovered by gravitational orbit predictions of Uranus by Kepler’s and Newton’s laws, that another planet was influencing. In 1845 John Adams predicted this in 1846 Urbain did also. In 1847 Johann Galilee observed by Urbain’s location estimates. But still another object was influencing, but undiscovered, that was Pluto. Pluto was discovered in 1930 by Clyde Tombaugh by photo referencing. Originally thought larger than Mercury but found to be a large moon, Charon. Adding to size reference in 1978. Also in 2005 Hubble discovered two additional moons of Pluto. Located far from the sun but not made of gas. Rather it is rock and ice most similar composition two
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Astronomy_1_Final_Study_Notes - Outer planets and Pluto All...

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