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Comparing and Contrasting between Earth and Saturn Properties Earth Saturn Similarities Differences The Planet’s name Other planets are named after Greek and Roman gods and goddesses. But, Earth’s name as and English/ German name which means the ground. It comes from the Old English words 'eor(th)e' and 'ertha'. In German it is 'erde'. The name Saturn was named after the roman god of agriculture. Saturn was Jupiter’s father. Position in the Solar Their planet is named after the Roman gods and goddess. Even though they are named after the Roman gods and goddess, it still has different name and different meaning. Position in the Solar System Earth is the third planet from the sun. Earth orbit the Sun, from an average distance of approximately 150 million kilometers away. Saturn is the sixth planet from the sun. Saturn orbits the Sun at an average distance of 1.43 billion km. Earth is in the inside the asteroid belt and Saturn is outside of the asteroid belt. Rotation of its Axis The earth took 23 hours, 56 minutes and 04 seconds to Spin around once. The mass of Earth is 5.97219 × 1024 kilograms. The diameter of Earth is 12.756 km. Saturn took 10 ¼ Earth hours to spin around once. The mass of Saturn is 5.6846×1026 kg. It’s about 95 times the mass of the Earth and the mass of Saturn is only 1/3 of the mass of Jupiter. The diameter of Saturn is 108,728 km. Their planet is round so there are diameter and also mass. Saturn took longer time to spin around once rather than Earth. They have different mass and diameter. Saturn’s diameter and mass are bigger than Earth. The gravity of Earth at the equator is 9.789 m/s2, but the force of gravity at the poles is 9.832 m/s2. Saturn’s gravity has a little stronger force than the force on Earth’s gravity. If you weighed 100 pounds on Earth you would weight about 106 pounds on Saturn Both planets have gravity. Size Gravity Saturn has more gravity than earth Orbit: Earth takes over a year to orbit the Sun (365.25 Earth days). The Earth revolves around the Sun at a speed of about 18.5 miles/sec (30 km/sec). Saturn orbits around the sun once every 29.4 Earth years. Saturn travels at an average speed of 21,637 miles per hour /34,821 kilometers per hour in its orbit around the sun. Both planets orbit the sun. Saturn need longer time to orbit the sun and Saturn’s average speed is faster than Earth when orbiting the sun. Atmosphere: Earth’s atmosphere consist of 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide and other gases. The atmosphere traps the heat from the sun so that Earth doesn’t get much sunlight because if it’s too much we’ll get burn. The Earth's atmosphere is about 300 miles (480 km) thick. And the Earth’s atmosphere is getting thinner and thinner. Saturn’s atmosphere consists of 96.3% molecular hydrogen and 3.25% helium. Ammonia, acetylene, Ethan, propane, phosphine, and methane have been detected in Saturn's atmosphere. Saturn and Earth Earth has oxygen that have atmosphere helps living things to that both contain breath. Saturn has more gases. dangerous gases than Earth. Temperature Earth’s temperature is about 15°C. Saturn's temperature is about -270 degrees Fahrenheit or -168 degrees Celsius. They both have different temperature. Saturn is really colder because it’s farther from the sun than Earth. Composition of your planet and its Appearance: Earth is a terrestrial planet. It has inner core, outer core, mantle and crust. Saturn is a gas giant planet. It is mostly compost of hydrogen and helium. Earth is a terrestrial planet but, Saturn is a gas giant planet. Moons/ Natural satellite: Earth only have 1 moon. Moon is the fifth largest satellites in the solar system. It’s temperature is around -143.15. The moon’s mass is 7.3477 × 1022 kg. Saturn has more moons that any other planet in the solar system. There more than twenty moon that have been discovered and there maybe others. Saturn has one large moon, six that are medium-sized, and many smaller ones. Most of the moons are covered by ice and pockmarked with craters. Some of its moons was taken from a number of photographs taken by Voyager 1. - Enceladus: Enceladus is the next outer moon after Mimas. It’s about 310 miles across. - Tethys: Tethys is about 600 miles across and is mostly ice. - Dione: Dione is about the same size as Tethys, but it is much heavier. It is made of ice with a rocky center. - Rhea: Rhea is the second largest of Saturn’s moons, about 950 miles across. - Titan: Titan is the largest of Saturn’s moons, about 3190 miles across. That is bigger than our own moon and even bigger than the planet Mercury and Pluto. Titan is the only moon in the Solar System known to have an atmosphere. Titan’s atmosphere is mostly nitrogen gas with some methane. Titan is very, very cold place. The temperature is 300 degrees (F) below zero. No live as we know it could live on Titan. - Hyperion: Hyperion is shaped something like a giant pickle. It is about 250 miles long and about 160 Both planets have moons. Saturn has more moons that Earth. to 140 miles wide. Some scientists think that Hyperion was once a much larger moon, but another object in space crashed into it and broke Hyperion apart. - Iapetus: Iapetus is about 900 miles across. It has one side that is much brighter than the other side. The bright side may be ice and the dark side may be rocky. But no one knows for sure. - Tiny Phoebe: Tiny Phoebe is only about 135 miles across. It is far away from Saturn, about eight million miles, that is takes 550 days to circle the planet. Rings: The large rings are made of thousands of smaller rings. The pieces in the rings are not spinning off into space because it’s pulled by Saturn’s gravity. The rings are wide but not very thick. How would a Human Being Fare on Your Planet: On Earth, everything is just perfect. It has oxygen in the Earth’s atmosphere. Our gravity is also not more, not less. We’re not crushed and we’re also not floating in the air. We would just weight a little more in Saturn. If you weigh 100 pounds on Earth, you would weight 115 on Saturn. We cannot stand on Saturn because it’s mostly made of gases. Something special Earth was originally born as a twin to the planet Theia, which was about half of Earth, about the size of Mars. The two planets shared an orbit for several million years until they collided (crash). Earth absorbed Theia, and the remaining debris eventually coagulated into Earth’s moon. The mass donated/given by Theia gave Earth the gravity Storms on Saturn can last of months or even years. A long-lived 2004 storm on Saturn, named the “Dragon Storm,” created megalightning 1,000 times more powerful than lightning on Earth Saturn is sometimes called “The Jewel of the Solar System.” Saturn is the only planet that could float in water. A day on Saturn is 10 hours and 14 minutes. The day Saturday is named after Saturn Earth have no rings but, Saturn have. Still can stand on the planet (not floating) If human live in Saturn, it’s different from Earth. Both planets have different history and facts. Discovery of your planet Create own question Before, people believed that Earth is the center of the Solar System. This belief was pushed by Claudius Ptolemaeus, also known as Ptolemy. Ptolemy believed that the stars and the other planets orbited the Earth. Why Earth is the only planet that support live? Why only some of the planets have rings? Why Earth doesn’t have rings? Why terrestrial planet is placed on the inner of the asteroid belt? On July 1, 2004, the Cassini-Huygens was the first spacecraft to orbit Saturn. Launched on October 15, 1997, It traveled over 2,000,000,000 miles at a speed of 70,700 miles per hour before it reached the ringed planet. Its mission has been extended to 2012. What if Saturn has 2 rings not just 1? If Saturn is the first planet from the sun, will it sometimes block the other planet to get the sunlight? Why gas giant’s planet is placed on the outer of the asteroid belt? These planets were discovered by different people Conclusion: Earth is the places where it can support live. No other creatures have been discovered in other planets (yet). Earth has the right atmosphere, gravity, temperature and others. The atmosphere gave us oxygen. The gravity is not too little that it could make us float or even too much gravity. The temperature is also not too hot and not too cold. Earth also has day and night and also seasons that could help human or even other living things. 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