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  1. 1. The Solar System
  2. 2. Content• After this studying, the student should be 1) Introduction able; 2) The Solar System 3) Asteroid Belt – To identify the 9 planet 4) Comet in our Solar System. 5) 9 Planet In Solar System – Knowing what is a) Mercury consist in our Solar b) Venus System. c) Earth d) Mars e) Jupiter f) Saturn g) Uranus h) Neptune
  3. 3. Introduction The Solar System consists of the Sun and the• astronomical objects bound to it by gravity. Formed from the collapse of a giant molecular cloud approximately 4.6 billion years ago.• The four smaller inner planets, Mercury, Venus, Earth and Mars, also called the terrestrial planets , are• primarily composed of rock and metal. The two largest, Jupiter and Saturn , are composed mainly of hydrogen and helium.•
  4. 4. The Solar System
  5. 5. Asteroid Comet belt The main asteroid belt  Comets are small Solar System bodies, typically only a few kilometres across, composed largely of volatile ices.  Short-period comets have orbits lasting less than two hundred years. Short- occupies the orbit between period comets are believed to originate Mars and Jupiter, between in the Kiuper belt. 2.3 and 3.3 AU from the Sun.  Long-period comets have orbits lasting Asteroids with diameters thousands of years. between 10 and 10−4 m are called meteoroids.
  6. 6. Image of the main Asteroid belt and the Image of the main Asteroid belt and the Trojan asteroids Trojan asteroids
  7. 7. 9 Planets in Solar System1. Mercury 2. Venus 3. Earth 4. Mars 5. Jupiter 6. Saturn 7. Uranus8. Neptune 9. Pluto
  8. 8. Mercury Mercury is the closest planet to the Sun , innermost and smallest (0.055 Earth masses) planet in the Solar System, orbiting the Sun once every 87.969 Earth days. Mercury is similar in appearance to the Moon: it is heavily cratered with regions of smooth plains, has no natural satellites and no substantial atmosphere . However, unlike the Moon, it has a large iron core, which generates a magnetic field about 1% as strong as that of the Earth.
  9. 9. Mercury
  10. 10. Venus
  11. 11. Cont’d Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. The planet is named after Venus, the Roman goddess of love and beauty. Venus has no natural satellites. The diameter of Venus is only 650 km less than the Earths, and its mass is 81.5% of the Earths. A day on Venus lasts 243 Earth days, while its year is 224.7 Earth days.
  12. 12. Earth Earth (or the Earth) is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It has one natural satellite, the Moon. Earth orbits the Sun once for every roughly 366.26 times it rotates about its axis, which is equal to 365.26 solar days. The Earths axis of rotation is tilted 23.4 ° away from the perpendicular to its orbital plane.
  13. 13. earthEarth Layer
  14. 14. earth’s layer
  15. 15. Mars Mars is the fourth planet from the Sun in the Solar System. The planet is named after the Roman god of war, Mars. It is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance. Mars has two tiny natural satellites (Deimos and Phobos) thought to be captured asteroids. Mars’ average distanceOrbit &the Sun is roughly 230 from Rotation million km (1.5 AU) and its orbital period is 687 (Earth) days. The axial tilt of Mars is 25.19 degrees.
  16. 16. Mars’s orbit & rotation
  17. 17. Jupiter Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. The Romans named the planet after the Roman god Jupiter. Having a diameter of 142,984 km at its equator. Jupiters density, 1.326 g/cm³. The only planet that has a center of mass with the Sun. Jupiters rotation is the fastest of all the Solar Systems planets, completing a rotation on its axis in slightly less than ten hours.
  18. 18. Planetary rings Planetary ringsψ Jupiter has a faint planetary ring system composed of three main segments; • An inner torus of particles (Halo) • Bright main ring • Outer gossamer ring .ψ Rings appear to be made of dust. The rings of Jupiter The rings of Jupiter
  19. 19. Name the 9 Planets ..1. ___________________2. ___________________3. ___________________4. ___________________5. ___________________6. ___________________7. ___________________8. ___________________9. ___________________
  20. 20. Saturn Saturn is the sixth planet from the Sun – 2nd largest after Jupiter. One-eighth the average density of Earth. Saturns mass is just over ninety-five times greater than Earths. Wind speeds on Saturn can reach 1,800 km/h. Saturn has nine rings. 62 known moons orbit the planet, 53 are officially named.
  21. 21. Physical Characteristic Saturn is an oblate spheroid ; that is, it is flattened at the poles and bulges at the equator. Its equatorial and polar radii differ by almost 10%—60,268 km versus 54,364 km. Average specific density of the planet is 0.69 g/cm³. Saturn is only 95 Earth masses. An ultraviolet photo of Saturns rings.
  22. 22. saturn orbit & rotation♣ The average distance between Saturn and the Sun is over 1 400 000 000 km (9 AU). Average orbital speed of 9.69 km/s, it takes Saturn 10,759 Earth days♣ (or about 29½ years).♣ The elliptical orbit of Saturn is inclined 2.48°. Planetary Ring  The rings extend from 6 630 km to 120 700 km above Saturns equator.
  23. 23. saturn orbit & rotation
  24. 24. Uranus Uranus is the seventh planet from the Sun, and the third-largest and fourth most massive planet in the Solar System. The wind speeds on Uranus can reach 250 meters per second (900 km/h, 560 mph). Axial Tilt Uranus has an axial tilt of 97.77 degrees. 
  25. 25. Planetary Ring Uranus has a pale planetary ring system, consist of dark particulate material up to 10 metres in diameter. Thirteen distinct rings are presently known, the brightest being the ε ring. All except two rings of Uranus are extremely narrow—they are usually a few kilometres wide.
  26. 26. Planetary Ring Uranuss inner rings. The bright Uranuss inner rings. The bright outer ring is the εεring, eight other outer ring is the ring, eight other rings are present. rings are present.Uranian ring systemUranian ring system
  27. 27. Neptune Neptune is the eighth and farthest planet from the Sun. Named for the Roman god of the sea. It is the fourth-largest planet by diameter and the third-largest by mass. On average, Neptune orbits the Sun at a distance of 30.1 AU. categorize Uranus and Neptune as "ice giants“. Wind speeds as high as 2,100 km/h. Temperatures at its cloud tops approaching −218 °C (55 K). Temperatures at the planets centre , however, are approximately 5,400 K (5,000 °C).
  28. 28. Pluto From its discovery in 1930 until 2006, Pluto was considered the Solar Systems ninth planet. It has an eccentric and highly inclined orbit that takes it from 30 to 49 AU (4.4–7.4 billion km) from the Sun. Pluto has two known smaller moons; Nix and Hydra, discovered in 2005.
  29. 29. Pluto orbit & rotation Plutos rotation period, its day, is equal to 6.39 Earth days. Pluto rotates on its "side" on its orbital plane, with an axial tilt of 120°. At its solstices, one hemisphere is in permanent daylight, while the other is in permanent darkness. Orbit & Rotation
  30. 30. Pluto orbit & rotation This diagram shows the relative positions of Pluto (red) and Neptune (blue) on selected dates. Orbit of Pluto—polar view. The darker halves of both orbits show where they pass below the plane of the ecliptic.Orbit of Pluto—ecliptic view. This side view of Plutosorbit (in red) shows its largeinclination to Neptunes orbit (in blue). The ecliptic is horizontal.
  31. 31. Let’s Watch Out A Video Of The
  32. 32. ReferencesDavies, Merton E; et al. (October, 1976). "Antoniadis Map of Mercury". SP-423 Atlas of Mercury. NASA. Retrieved 2010-08-09."Dawn: A Journey to the Beginning of the Solar System". Space Physics Center: UCLA. 2005. Retrieved 2007-11-03.Luhmann J. G., Russell C. T. (1997). J. H. Shirley and R. W. Fainbridge. ed. Venus: Magnetic Field and Magnetosphere. Chapman and Hall, New "An Overview of the Solar System". Retrieved 2007-02-15.Staff (2008-07-24). "World". The World Factbook. Central Intelligence Agency. world-factbook/geos/xx.html. Retrieved 2008-08-05."Space Topics: Compare the Planets: Mercury, Venus, Earth, The Moon, and Mars". Planetary Society. Retrieved 2007-04-12. retrieved 2010-10-19
  33. 33. Thank You For Your Attention … =)