SPACE

SPACE PROBE

• A space probe is a space craft that travels through space to gather photos of planets and send them back to the scientists
• They allow scientists to know what it is like on other planets
• Position is very important because if you are trying to study a certain place it has to be pointed at it
• Sputnik 1 was the first in space,
• Mariner 4 was the first to take a picture of a planet, and mariner 9 was first to orbit a planet

SPACE PROBE 2

• The space probe discovered that Venus is very hot
• It important because if you sent one up there without heat fear it will explode wasting lots of money

ASTEROID FEATURES

• Small
• Rocky
• Irregularly shaped (too small to be spherical)
• Range from a pebble to 100's of km across
• Inactive

ASTEROID ATMOSPHERE

• Don't have atmospheres

ASTEROID MOTION

• Orbits the Sun
• Elliptical orbit
• Irregular Rotation

CATERGORIZATION

• Position in the Solar System (Asteroid Belt, Near Earth, Trojans)
• Chemical Compostion
• S-Type: Bright, nickel-iron mixed with iron, magnesium, and other compounds
• C-Type: Dark, same Composition as the Sun (minus hydrogen, helium, and other gases)
• M-Type: Bright, 100% nickel-iron

PLANET FEATURES

• Mercury: Large craters, broken and distorted landscape
• Venus: More then 1,000 impact craters, shaped by volcanoes
• Earth: Features can change due to tectonic plates
• Mars: dry, barren wasteland; filled with impact craters
• Jupiter: Where atmosphere pressure is one bar

FEATURES (2)

• Saturn: Ball made up of hydrogen and helium
• Uranus and Neptune: Ball of ice and gas

ATMOSPHERE

• Mercury: Contains small amounts of hydrogen, helium, and oxygen
• Venus: So harsh you can't see anything but it's upper atmosphere
• Earth: 78%. Nitrogen, 21% Oxygen, 1% other gases
• Mars: Made up of carbon dioxide
• Jupiter: Made up of hydrogen and helium

ATMOSPHERE (2)

• Saturn: Made up of sulfur, nitrogen, and oxygen
• Uranus: Made up of molecular, hydrogen, and helium
• Neptune: Made up of hydrogen and helium

PLANET MOTIONS

• Moves clockwise around the Sun
• Rotates clockwise in orbit

CATERGORIZED 5 WAYS

• Inferior Planets: Mercury and Venus
• Superior Planets: Mars, Jupiter, Saturn, Uranus, Neptune, Pluto
• Inner/Terrestrial: Mercury, Venus, Earth, Mars
• Outer Planets: Jupiter, Saturn, Uranus, Neptune, Pluto
• Gas Giants/Jovian: Jupiter, Saturn, Uranus, Neptune