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The Solar System

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Sean Yu

on 28 May 2013

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Transcript of The Solar System

Mercury is the smallest and closest to the Sun of the eight planets in the Solar System, with an orbital period of about 88 Earth days.

It only takes 116 days to complete an orbit circle to the sun, which is faster then any other planet in the solar system. This may be the reason it is named after the fast-flying messenger to the gods-Mercury. The Sun is the star at the center of the Solar System.

It has a diameter of about 1,392,684 km, about 109 times that of Earth, and a surface temperature of approximately 5505 °C. Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after the Roman goddess of love and beauty. After the Moon, it is the brightest natural object in the night sky.

Venus is by far the hottest planet in the Solar System with a average surface temperature of approximately 462 °C. Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets.

Earth orbits the Sun at an average distance of about 150 million kilometers every 365.2564 mean solar days, or one sidereal year. Mars is the fourth planet from the Sun and the second smallest planet in the Solar System. Named after the Roman god of war, it is often described as the "Red Planet".

Mars's average distance from the Sun is roughly 230 million km and its orbital period is 687 (Earth) days. The solar day on Mars is only slightly longer than an Earth day: 24 hours, 39 minutes, and 35.244 seconds. A Martian year is equal to 1 year, 320 days, and 18.2 hours. Jupiter is the fifth planet from the Sun and the largest planet in the Solar System. it is classified as a gas giant along with Saturn, Uranus and Neptune.

The average distance between Jupiter and the Sun is 778 million km (about 5.2 times the average distance from the Earth to the Sun) and it completes an orbit every 11.86 years. Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Named after the Roman god of agriculture.

Saturn has a prominent ring system that consists of nine continuous main rings and three discontinuous arcs, composed mostly of ice particles with a smaller amount of rocky debris and dust.

The average distance between Saturn and the Sun is over 1.4 billion km . With an average orbital speed of 9.69 km/s, it takes Saturn 10,759 Earth days (or about 29½ years). Uranus is the seventh planet from the Sun. it is similar in composition to Neptune, and both are of different chemical composition than the larger gas giants Jupiter and Saturn. For this reason, astronomers sometimes place them in a separate category called "ice giants".

Uranus revolves around the Sun once every 84 Earth years. Its average distance from the Sun is roughly 3 billion km. Neptune is the eighth and farthest planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass.

Neptune was the first planet found by mathematical prediction rather than by empirical observation.

The average distance between Neptune and the Sun is 4.50 billion km, and it completes an orbit on average every 164.79 years. The Moon is the only natural satellite of the Earth, and the fifth largest satellite in the Solar System.It is the largest moon in the Solar System relative to the size of its planet.

The Moon is in synchronous rotation with Earth, always showing the same face with its near side marked by dark volcanic maria that fill between the bright ancient crustal highlands and the prominent impact craters knowlodege and photos retrived from NASA.gov
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