Saturn
Saturn is the outermost planet of the planets known in ancient times. The earliest known observations of Saturn, by the Babylonians, can be reliably dated to the mid-7th century BC, but it was probably noticed much earlier, since Saturn tends to shine brighter than most stars. To the naked eye it appears yellowish. The Greeks named it after Cronus, the original ruler of Olympus, who in Roman is the god Saturn.
Saturn is the 6th planet in order distance from the sun. It cannot approach the planet Earth closer than 1,190,000,000 kilometers. Its brightness is due to its large size. Saturn's equatorial diameter is 120,660 kilometers, but its globe is kind of flattened, and the polar diameter is only 108,000 kilometers. The mass of Saturn is 95.17 times that of the Earth, and the escape velocity, which is the velocity which once attained it will enable the object to "coast" away from the planet, is 32.26 kilometers per second, more than three times that of the Earth. Saturn's outer layers are made up of gas, it is a world quite unlike our own.
Saturn's ring system is in a class of its own. While Jupiter and Uranus also have rings, those of Saturn are striking, and a telescope of moderate power will show them excellently. There can be no doubt that Saturn is one of the most beautiful objects in the sky.
The first telescopic observations of Saturn have been made by Galileo in July 1610. He saw the disk of the planet clearly, but his telescope gave only a magnification of 32 diameters and that was not good enough to show the ring system in the way we know it nowadays. Galileo thought that Saturn must be a triple planet and wrote that "Saturn is not one alone, but is composed of three, which almost touch one another....
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...d Mimas have icy, cratered surfaces. One huge crater on Mimas has more than one-third the diameter of the satellite itself, so that, if the crater were formed by impact, it seems that Mimas would have been in danger of breaking up. Enceladus was not well shown from Voyager 1, but it may be comparatively smooth.
Titan, by far the largest of Saturn's satellites, is in a class of its own because of its dense atmosphere. Data obtained from Voyager 1 indicate that the atmospheric pressure at Titan's surface is 1.5 to two times that of the Earth at sea level. The actual surface of the satellite has an orange-colored layer of what may be called "photochemical smog." Titan's atmosphere is made up almost entirely of nitrogen with little amounts of methane and cyanide. It is possible that the intensely cold surface is covered, at least in part, by oceans of liquid nitrogen.
Saturn is the sixth planet in the galaxy but is not in fact the only planet with rings. Saturn is also the second largest planet after jupiter. It is also known as a gas giant due to the fact that it is predominately made up of hydrogen and helium which are numbers 1 and 2 on the periodic table. It is also the only planet in the solar system that is less dense than water. Saturn is so big that it and Jupiter make up 92% of the planetary mass in our solar system according to Jonathan J.Nettelmann who wrote Space Science Reviews on May 10 2010 so it is pretty recent.
The atmosphere of Uranus is thick with a lot of hydrogen, helium, and methane. It has a very low density, the mean density is 1271 kg/m³. Uranus lacks any really significant internal heat source and it mean surface temperature is 58° K.
Jupiter is a very interesting planet. It is very much different from our planet Earth. Its days are a lot shorter than and Earth day. Then the years though are very long. The giant, Jupiter, is named after and old Greek god. Jupiter actually has rings, though very little. It is one of my favorite planet’s.
Pluto is usually farther from the Sun than any of the nine planets; however, due to the eccentricity of its orbit, it is closer than Neptune for 20 years out of its 249 year orbit. Pluto crossed Neptune's orbit January 21, 1979, made its closest approach September 5, 1989, and will remain within the orbit of Neptune until February 11, 1999. This will not occur again until September 2226.
Saturn is the 6th planet away from the sun and is the second largest planet in the solar system with a diameter of 119,871 km (74,500 miles). Saturn’s volume is 764 times bigger than of Earth’s (so 764 Earths can be fit inside Saturn). It originated from the Greek god Cronus which was adopted by the Romans and later changed to Saturn. The surface color is yellowish-brown and is the most distant planet that’s visible to the naked eye from earth. It is known as one of the two ‘gas giants’, as it is of composed 96% hydrogen (gas), 3% helium (gas), and 1% various trace elements such as methane, ammonia, ethane, and hydrogen deuteride. It takes almost 28.5 years to complete one orbit, though it rotates in just over 10.5 hours. The range of temperatures
orbit is the most circular of any planet, with an eccentricy of less than 1%.
Neptune gets its name from the Roman god of the sea. Neptune is the eighth planet from the sun and is the fourth largest. Neptune was discovered after scientist noticed that Uranus orbit didn't follow Newton's law, it was presumed that there must be another planet. Galileo originally thought Neptune was a star. Pluto's orbit is so eccentric, it sometimes crosses the orbit of Neptune making Neptune the most distant planet from the Sun. Neptune has been visited by only one spacecraft, Voyager 2 on Aug 25, 1989. Much of we know about Neptune comes from this single encounter. Neptune's blue color is largely the result of absorption of red light by methane in the atmosphere. Neptune has rapid winds and large storms. Neptune's winds are the fastest
Titan is the second largest moon in our solar system, being slightly larger than Mercury, and because of this, it has an affect on the near-by moons orbits around Saturn. Its atmosphere consists of thick nitrogen clouds and a small amount of methane (Saturn: Moons and Charles Choi). Many of the moons possess a mind-blowing characteristic, separating itself from the rest of the moons. Lapetus, for example, is as bright as snow, and the opposite side is as dark as a pitch black sky at night (Saturn: Moons).
On the other hand, Pluto is larger than the other 40 known moons in the solar system. There is no scientific reason to arbitrarily distinguish between planets and asteroids based on the sizes of the moons that happen to be present in a planetary system.... ... middle of paper ... ... 78, No. 1, pp. 113-117.
2,870,990,000 km (19.218 AU) from the Sun, Uranus hangs on the wall of space as a mysterious blue green planet. With a mass of 8.683e25 kg and a diameter of 51,118 km at the equator, Uranus is the third largest planet in our solar system. It has been described as a planet that was slugged a few billion years ago by a large onrushing object, knocked down (never to get up), and now proceeds to roll around an 84-year orbit on its belly. As the strangest of the Jovian planets, the description is accurate. Uranus has a 17 hour and 14 minute day and takes 84 years to make its way about the sun with an axis tilted at around 90° with retrograde rotation. Stranger still is the fact that Uranus' axis is almost parallel to the ecliptic, hence the expression "on its belly".
Pluto is located 7.5 billion kilometers from Earth and is only over 2,000 km in diameter. Pluto has been labeled both a planet and a dwarf planet over the years. As said by USA Today, “a planet is a celestial body that: is in orbit around the sun, is round or nearly round, and has "cleared the neighborhood" around its orbit, meaning it is not surrounded by objects of similar size and characteristics.” Pluto only follows two of the three rules of a planet. Pluto crosses over Neptune’s orbit and is near other dwarf planets like it. Even though it breaks one rule it was officially named a dwarf planet in “August 2006”, as stated by the Library of Congress. After this event Pluto still only has one correct classification. Pluto is a planet because
Our knowledge gained of Titan has drastically improved since the early 1980s when Voyager flew past it. Titan is Saturn’s largest moon and the second largest moon of our solar system. It has a diameter estimated roughly 40% of Earth’s moon (Titan’s Radius: 2576, Moon’s Radius: 1737) and is 80% more massive (Titan’s Mass: 1.35 x 10^23 kg, Moon’s Mass: 7.35 x 10^22 kg. Titan has a atmospheric surface pressure 50% more than of Earth’s. In addition to that, Titan is the only moon to have a dense atmosphere. Titan’s atmosphere has been calculated to be 4.5 times more dense than of Earth’s atmosphere, which can been clearly noted by the layers of haze seen. The atmosphere in Titan is approximately 1.5km and is mainly composed of nitrogen. Titan has a very similar vertical atmospheric structure to earth, Titan has a troposphere temperature of ~94-~70K, a tropopause temperature of 70.4K and a stratosphere temperature of ~70-175K.
Our solar system has eight planets, their moons and satellites, and they are all orbiting the Sun. The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto used to be the ninth planet but IAU changed the definition of planet and Pluto did not meet the standards so it is now a Dwarf planet.
Saturn's sales are down, and market share needs to be increased. Also, the product line is too narrow. Current advertising is targeting the younger population, but the average age of a Saturn buyer is 43. Saturn's initial focus on employee relationships seems to be fading as demonstrated with the clash between GM designers in Europe and the U.S. on the L-Series car. In addition, overall styling of the vehicles needs to be addressed.
The fourth planet from the sun is Mars. “Mars is named after a mythological figure-the Roman God of War. Due to Mars color it is also known as the red planet. Mercury is the tiniest planet then Mars. Scientist have found that mars has the largest mountain compared to the other planets. Furthermore, this mountain is named Olympus Mons, it is a shield volcano, it is 21 km high and 600 km in diameter. Scientist have discovered recent lava on the planet, therefore the volcano may still be active.