The Solar System

1. Haley Biggins, Random PowerPoint The Solar System

2. Section One:Our Planets, Our Solar System

3. The Planets, From Closest To the Sun • Mercury • Venus • Earth • Mars • Jupiter • Saturn • Uranus • Neptune Citing - http://cse.ssl.berkeley.edu/AtHomeAstronomy/act09_planet_list.html

4. Our Sun • In the center of our solar system • Provides light, heat, and energy • Gaseous • The suns diameter is about 432,000 miles • Over 1 billion stars in the galaxy • Has a temperature of about 10,000 degrees Fahrenheit

5. Our Sun • The sun is magnetic • Born about 4.6 billion years ago • 99.8% of the mass in our solar system • The average density is 90 lbs./ square foot Citing - http://www.nasa.gov/worldbook/sun_worldbook.html#backToTop

7. The Planets, Mercury • Diameter of 3032 miles across the equator • It is the fastest planet to move around the sun in its orbit • Has the slowest rotation except for Venus • Travels about 30 miles per second Citing - http://www.nasa.gov/worldbook/mercury_worldbook.html

8. The Planets, Venus • Similar to Earth in size • When Venus is at its nearest point to Earth, it can be seen all day • Venus has the most circular orbit around our sun • 55 degrees F on the surface, but up to 870 degrees F of the actual planet • The mass is about 4/5th of Earth’s Citing - http://www.nasa.gov/worldbook/venus_worldbook.html

9. Venus’ Surface

10. The Planets, Earth • Has life • Ranked 5th in size • About 93 million miles from the sun • Earth takes 365 days 6 hours 9 minutes 9.54 seconds to circle the sun once • The distance around Earth's orbit is 584 million miles Citing - http://www.nasa.gov/worldbook/earth_worldbook.html

11. The Planets, Mars • The fourth planet from the sun • About 4.6 billion years ago • Nicknamed from the ancient god of war • Water once flowed on the surface of Mars • Water may still live in cracks under the surface • Vast amounts of ice under the surface

12. The Planets, Jupiter • About 11 times bigger than Earth • Usually brighter than most stars and planets, except Venus • Named after the king of Roman gods • A giant ball of gas and liquid with little, or no, solid surface • Travels in an elliptical orbit • Completes one orbit every 4,333 days (12 Earth Years) • Large mass but very low density

13. Callisto and Ganymede are moons of Jupiter

14. The Planets, Saturn • Has 7 flat rings around it • Diameter is almost 10 times that of Earth’s • Named it the Roman god of agriculture • It takes almost 30 years to orbit the sun • Lower density than any other planet • Has 25 satellites and numerous other smaller ones that orbit around with the rings of Saturn

16. The Planets, Uranus • 7th planet from the sun • Takes light 2 hours and 40 minutes to travel to Uranus • British astronomer William Herschel discovered it in 1781 • Rotates on a horizontal axis • Has 21 known satellites • Strong magnetic field • 1,784,860,000 miles from the sun

17. The Planets, Neptune • Clouds surround the planet • Every 248 years Pluto moves inside Neptune's orbit for about a 20-year period • The diameter at the equator is four times bigger than Earth’s • 1 Day – 16 hours and 7 minutes • Made up of hydrogen, helium, water, and silicates

19. What About Pluto?!?!?! Picture of Pluto from the Hubble Telescope • Considered a Dwarf Planet • Last planet in our Solar System • About 3,647,240,000 miles from the sun • Comes inside Neptune’s orbit about for 20 Earth Years every 248 Earth Years • Astronomers know little because it is so far away from Earth and the sun • Thin atmosphere