The Sun At the Center (and we do go around it …..) 99.85% mass of Solar System 92% H / 8% He Source of solar wind and space weather Image:http://photojournal.jpl.nasa.gov/catalog/PIA03149
Inner Planets “Terrestrial Planets” Rocky Dense Metal cores (iron) Images: Lunar and Planetary Laboratory: http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=178
Asteroids Image: http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=2093http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=2093 “Minor planets” or “planetoids” less than 1000 km across Asteroid Belt between Mars and Jupiter Occasionally run into Earth and other planets (oops) Ida
Outer Planets Large! Gases and liquids No solid surface May have a small solid core Tumultuous atmospheres - rapid winds, large storms Rotate relatively quickly Image: Lunar and Planetary Laboratory: http://solarsystem.nasa.gov/multimedia/display.cfm?IM_ID=178
Kuiper Belt Disk of debris at the edge of our Solar System Pluto is a KB Object (sorry!) Source of short- period comets
MERCURY Closest planet to the Sun, but not the hottest due to lack of an atmosphere Smallest planet in the Solar System Surface covered in craters, just like Earth's Moon; solid iron core(3/4) surrounded by liquid iron and silicate mantleEarth's Moon Temperature (up to 350°c on its sunlit side and -170°c on its dark side) One year lasts for only 88 Earth days One day takes 59 Earth days
VENUS For years, Venus was called Earth's Sister Planet or Twin Named after the ancient Roman god of love Very heavy atmosphere (97% CO 2, sulfuric acid clouds) 896 O F….that’s HOT!
EARTH Three layers: core, mantle, crust Atmosphere has five layers, which together serve to block harmful rays and insulate/regulate temperature Only planet that we know of that is capable of sustaining life
MARS About half the size of Earth, but is most Earth-like Thin atmosphere is being blown away by Sun’s wind Is reddish in color due to the iron oxide - commonly known as rust - that is in the soil. Could possibly be made habitable by man
Asteroid Belt Asteroids are left over materials from the formation of the Solar System. These materials were never incorporated into a planet because of their proximity to Jupiter's strong gravity.
JUPITER ✶ Largest planet (1320 Earths) ✶ Great Red Spot (immense storm) ✶ Most moons of all planets (63) ✶ Named after Roman god of lightning (king of the gods) ∗ Gas giant (huge atmosphere) ∗ Liquid rock core, liquid mantle, liquid nitrogen, hydrogen and helium gases
SATURN Gas planet (least dense planet) Structure is very similar to Jupiter Atmosphere is also mostly hydrogen and helium Great white spot(?) Magnificent rings likely caused by a collision between two of its satellites
URANUS Gas giant Liquid rock core surrounded by an “ocean” of hydrogen, helium, and water, with small amounts of ammonia and methane Bland, almost featureless atmosphere made of hydrogen, helium, methane and ammonia Only planet that rotates on its side! Named after Greek god of the heavens
Neptune “Twin” of Uranus, except that its atmosphere has much more detail Unique Great Dark Spot (not much known) Named after the ancient Roman god of the sea
MercuryVenusEarthMarsJupiterSaturnUranusNeptune Mean distance from the sun (10 6 km) 57.91081502287781,4302,8704,500 Period of revolution (years) 0.2410.6151.001.8811.929.584.0165 Orbital speed (km/s) 47.935.029.8220.127.116.116.815.43
Relationship between distance and speed MercuryVenusEarthMarsJupiterSaturnUranusNeptune Mean distance from the sun (10 6 km) 57.91081502287781,4302,8704,500 Period of revolution (years) 0.2410.6151.001.8811.929.584.0165 Orbital speed (km/sec) 47.935.029.818.104.22.1686.815.43