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SUN Diameter 1.39 million km Gravitational Pull 28 times that of Earth

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Presentation on theme: "SUN Diameter 1.39 million km Gravitational Pull 28 times that of Earth"— Presentation transcript:

1 SUN Diameter 1.39 million km Gravitational Pull 28 times that of Earth Revolution Rate around the galaxy is 250 million years Rotation Rate around the equator region is 25 Earth days The Sun is our closest star and the only star in our solar system. It is a yellow dwarf star, which means it is a medium size star. It is believed to be 4.6 billion years old. The core of the Sun is estimated to be over 15,000,000 degrees Celsius. The sun is 93 million miles away. It takes light eight minutes to reach us. The light you see outside right now left the sun eight minutes ago.

2 Mercury Diameter 4,878 km Gravitational Pull .38 times that of Earth Revolution Rate 87.9 Earth days Rotation Rate 58.6 Earth days Mercury is the smallest planet in our solar system, about the same size as our Moon, and closest to the Sun. The surface temperature on the side of Mercury closest to the Sun reaches 427 degrees Celsius, a temperature hot enough to melt tin. On the side facing away from the Sun, or the night side, the temperature drops to -183 degrees Celsius. The surface of Mercury has holes in it where objects such as meteorites and asteroids crashed into it.

3 Venus Diameter 12,100 km Gravitational Pull .91 times that of Earth Revolution Rate 224.7 Earth days Rotation Rate 243 Earth days Named after the Roman goddess of love, Venus is about the size of Earth. However life cannot survive on Venus. Venus gets so hot during the day that it could melt a lead cannonball. The temperature rises to 484 degrees Celsius on the side facing the Sun. Venus has very thick, rapidly spinning clouds which cover its surface. These clouds hold heat in. The heat is not the only reason why a human might not survive on Venus. The dense atmosphere is made of carbon dioxide and sulfuric acid which would cause suffocation.

4 Earth Diameter 12,576 km Gravitational Pull 9.8 meters per second² Revolution Rate Earth days Rotation Rate 23.93 hours Earth is the only inner planet with liquid water on its surface. Seventy percent of the Earth's surface is covered by water. The remaining 30 percent is covered by mountains, volcanoes, deserts, plains, and valleys. Earth’s atmosphere is made up of many gasses. The main gases of nitrogen and oxygen make up 99% of earth’s atmosphere. Earth is the only planet on which humans have walked.

5 Mars Diameter 6,786 km Gravitational Pull .38 times that of Earth Revolution Rate Earth days Rotation Rate 24.6 hours Mars has many craters which were formed by meteorites or asteroids hitting it. Mars also has some of the tallest volcanoes and some of the deepest valleys in our solar system. The Mars’ dirt contains clay rich in iron which gives Mars its red color. The orbit of Mars around the Sun is more oval than round. Since the distance between the Sun and Mars varies, temperatures range from -125 degrees Celsius in the Martian winter to 22 degrees Celsius in the Martian summer.

6 Jupiter Diameter 143,000 km Gravitational Pull 2.54 times that of Earth Revolution Rate 11.78 Earth years Rotation Rate 9 hours 55 minutes Jupiter is a large gas planet whose clouds change colors daily. This planet is made mostly of hydrogen and helium gases. Huge areas of swirling gases can be found in Jupiter's atmosphere. The largest swirling area of gas is called the Great Red Spot. Scientists believe this is a large hurricane-like storm. It is so big that three Earths would fit in the Great Red Spot alone! Jupiter itself is so large that all of the other planets in the solar system could fit inside of it.

7 Saturn Diameter 120,660 km Gravitational Pull .93 times that of Earth Revolution Rate 29.46 Earth years Rotation Rate 10 hours 40 minutes Saturn is a very large gas planet which spins very rapidly on its axis. It spins so fast that it flattens out and causes Saturn to bulge at its equator. Saturn's atmosphere has winds which can blow at over 1800 kilometers per hour! The white spots on Saturn are believed to be powerful storms. Saturn is surrounded by over 1000 rings made of ice and dust. Saturn has the lowest density of any planet in our solar system. Its density is so low that it would float if it was placed in water.

8 Uranus Diameter 51,118 km Gravitational Pull .8 times that of Earth Revolution Rate 84.01 Earth years Rotation Rate 17 hours 14 minutes Uranus is one of the smaller gas giants in our solar system, but it is still large enough to hold 64 planets the size of Earth. Uranus tilts over so far on its axis that it rotates on its side. Uranus has an average temperature of about -350 degrees Fahrenheit. The cold methane gas in Uranus’ atmosphere is what gives Uranus its blue-green color.

9 Neptune Diameter 49,528 km Gravitational Pull 1.2 times that of Earth Revolution Rate Earth years Rotation Rate 16.11 hours Neptune and Uranus are very much alike. They are both large gas planets that look like big blue-green balls in the sky. Neptune has winds in its atmosphere which blow at over 2000 kilometers per hour! This planet has large, dark circles on its surface which astronomers believe to be storms.


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