Our Solar System

1
Our Solar System
2
The Sun our very own star

• The Sun is the center of our solar system
• The word solar means of the sun
• Our sun is a medium-sized star
• Our sun is medium-hot, and yellow

3
The Inner Planets
4
Spinning Planets

• Period of Rotation amount of time that an object
  takes to rotate once. (1 Day)
• Period of Revolution time it takes an object to
  revolve around the sun once. (1 year)
• http//www.youtube.com/watch?v97Ob0xR0Ut8feature
  related

5
Mercury

• On Mercury you weigh only 38 of what you weigh
  on Earth.
• Fastest orbiting planet
• Planet nearest to the sun
• One side of the planet can be 800 degrees
  Fahrenheit when the other can be -280 degree
  Fahrenheit at the same time.
• Orbit Period 88 days
• Rotation Period 59 days

6
Venus

• On Venus you weigh only 91 of what you weigh on
  Earth.
• Venus has 90 times the pressure of Earth and its
  the hottest planet.
• Venus has volcanoes like Earth
• Rotates in the opposite direction of Earth.
• One time there were oceans before they boiled
  away.
• Orbit Period 224 days
• Rotation Period 242 days

7
Earth

• 23 hours and 56 min1 Earth day (rotation)
• 365 days 1 Earth year (revolution)
• Earth is warm enough to keep most of its water
  from freezing and cold enough to keep its water
  from boiling
• Temperature is between 13 degrees Celsius and 37
  degrees Celsius

8
Mars

• Air Pressure on Mars is the same as 30 km above
  the Earths surface
• Mars is in the form of ice.
• Evidence that water was there at one time
• Volcanic history like Earth.
• It has the tallest mount of the planets (Olympus
  Mons) 3xs size of Mt. Everest.
• Orbital Period 687 days
• Rotation Period 24. 6 hours

9
Outer Planets
10
Jupiter

• Largest planet in the Solar System
• Has a Great Red Spot from a storm system that is
  more than 400 years old
• Pressure is so great it would crush a spaceship.
• Orbit Period 12 years
• 9 hours and 54 min1 Jupiter day (shortest day)

11
Saturn

• 2nd Largest planet in the Solar System
• 95 times more massive than earth.
• Saturn has the largest rings of any planet, the
  rings are made of icy particles.
• Most moons of any planets ( 47 known)
• Orbit Period 12 years
• Rotation Period 10 hours

12
Uranus

• Discovered in 1781
• Uranus appears blue-green in color
• Its axis of rotation is tilted 90 degrees
• Moons are named after Shakespearean plays and
  formed from other broken moons.
• Orbit Period 84 years
• Rotation Period 17 hours

13
Neptune

• Discovered in 1846
• The atmosphere appears blue and is marked by
  large dark blue storms
• Neptune has visual belts of clouds
• It has a system of 5 rings and at least 13 moons
• Orbit Period 165 years
• Rotation Period 16 hours

14
Pluto

• Discovered 1930
• Mystery Planet
• Farthest from the sun
• Recently changed from a being considered a planet
  to a dwarf planet.
• Orbit Period 248 years
• Rotation Period 6.4 days

15
21st Century Solar System
16
If you traveled on a shuttle thats going 28,000
mph it would take

• Saturn 3.6yr
• Uranus 7.3yr
• Neptune 11.4yr
• Pluto 15.1yr

• Mercury 52d
• Venus 100d
• Mars 210d
• Jupiter 1.9yr

17
Dwarf Planets

• A dwarf planet is a celestial body massive enough
  to be spherical, in orbit around the Sun, which
  are not satellites. The crucial factor dividing a
  planet from a dwarf planet is that a planet must
  have succeeded in clearing the area of its orbit
  from debris and other objects, whereas a dwarf
  planet has not.

18
Dwarf Planets
19
Kuiper Belt

• Class of icy bodies orbiting beyond Neptune.
• Found only in the outer Solar System (gt30AU)
• Densities of 1.2 to 2 g/cc (mostly ices)
• Examples
• Pluto Eris (icy dwarf planets)
• Kuiper Belt Objects (30-50AU)
• Charon, Plutos large moon
• Sedna Quaor distant large icy bodies

20
Kuiper Belt
21
The Leftovers (small bodies)

• Asteroids
• Made of rock metal (density 2-3 g/cc)
• Sizes Few 100km to large boulders
• Most are found in the Main Belt (2.1-3.2 AU)
• Meteoroids
• Bits of rock and metal
• Sizes grains of sand to boulders
• Comets
• Composite rock ice dirty snowballs
• Long tails of gas dust are swept off them when
  they pass near the Sun.

22
Meteoroid, Meteorite and Meteor

• A meteoroid is a small rock or particle of debris
  in our solar system. They range in size from dust
  to around 10 metres in diameter (larger objects
  are usually referred to as asteroids).
• A meteoroid that burns up as it passes through
  the Earths atmosphere is known as a meteor. If
  youve ever looked up at the sky at night and
  seen a streak of light or shooting star what
  you are actually seeing is a meteor.
• A meteoroid that survives falling through the
  Earths atmosphere and colliding with the Earths
  surface is known as a meteorite.