Presentation on theme: "The Solar System. ORGANIZATION OF THE SOLAR SYSTEM Claudis Ptolemy said the earth was the center of the universe and the planets and sun revolved around."— Presentation transcript:
ORGANIZATION OF THE SOLAR SYSTEM Claudis Ptolemy said the earth was the center of the universe and the planets and sun revolved around it. Nicholas Copernicus said the sun was in the center of the universe and the planets rotated around it in a circular orbit.
Johannes Kepler published his laws of planetary orbit stating the planets rotated in an elliptical orbit. Galileo used the newly invented telescope to study the planets and say there were many planets orbiting the sun. Planetary system- a system of planets revolving around the sun (a star).
Smaller bodies that orbit the sun include asteroids, meteoroids, and comets. Asteroid a chunk of rock and metal that orbits the sun. Asteroid belt – a large area of asteroids located between Mars and Jupiter.
Meteroid- a rock that floats in space Meteor- a streak of light produced by the friction of the atmosphere rubbing against the meteoroid. Meteorite- when a meteor strikes the earth’s surface it is called a meteorite.
Comet- a ball of ice, rock, and frozen gases that orbits the sun. All planets orbit the sun.
MERCURY Rocky surface with craters Thin atmosphere containing hydrogen and helium In sunlit areas the surface is hot enough to melt lead
VENUS Surface: Rocky Atmosphere: thick, mostly carbon dioxide and nitrogen Fact: direction of rotation is opposite of all other planets
EARTH Surface: Mostly water with areas of soil covered rock Atmosphere: mostly nitrogen and Oxygen Fact: has only known life in the solar system
MARS Surface: Rocky, Covered with dust Atmosphere: thin mostly carbon dioxide Fact: has largest volcano-Olympus Mons, whose base is larger than the state of New Mexico.
JUPITER Surface: Gaseous planet, possibly with liquid hydrogen surface Atmosphere: mostly hydrogen and helium Fact: Great Red Spot-huge storm that has lasted since the time of Galileo Great Red Spot
SATURN Surface: Gaseous planet with no known solid surface Atmosphere: mostly hydrogen and helium Fact: has wide, thin system of rings made of small pieces of ice and rock
URANUS Surface: Gaseous planet without a known solid surface Atmosphere: mostly hydrogen and helium Fact: Possible collision with an earth sized object may have knocked Uranus on it’s side as a result, it roll around in an orbit.
NEPTUNE Surface: Gaseous planet without a known solid surface Atmosphere: Mostly hydrogen, helium, and methane Fact: one of the windiest places in the solar system. (1,000km per hr) 620 mph.
Pluto Surface: Water and Methane Ice Atmosphere: Mostly Methane Fact: Usually 9 th planet, but part of its orbit is inside Neptune’s orbit, making Pluto the 8 th planet on occasion.
Astronomical Units/Light –Years Astronomical unit (A.U.)-the unit of measurement astronomers use to measure distances in the solar system. A.U.-equal to the average distance between the Earth and the sun This distance is 150 million km or 93 million miles. Light-year-equal to the distance light can travel in a vacuum in one year. Used to measure distances to the stars.