Can not perform complicated experiments (Wanda) Can travel farther in space (Wanda) Cheaper (Kato) Can stay out in space longer (Wanda) Do not have to return to Earth (Kato) Quicker to build (Wanda) Can not perform complicated experiments (Wanda)

People can conduct experiments (Kato) People can provide information as to how low-gravity affects the body (Owen & Kato) Tremendous personal experience (Kato) Muscles and bones weaken in low gravity (Kato) Require more fuel and cost for supplies (Kato) Exposure to harmful radiation (Owen)

contain a person on board Manufactured object used to explore space Attractive force that pulls two objects together Factors: mass & distance Studies events beyond the Earth’s atmosphere Mission that does NOT contain a person on board Mission that DOES contain a person on board Ball of gas that creates light and heat

Orbits a star Round Reflects light Clears path in its orbit Weight = mass x gravity -changes depending on where you are in space A ratio between the ACTUAL size of an object and its size in a MODEL (Actual / Scale) Collection of billions of stars and their solar systems Gathering information about an object without seeing it or touching it Manufactured object placed in orbit around Earth -collects data

150,000,000 Earth Sun Orbit planets Man-made objects Piece of equipment that allows you to see objects in space closer up and in more detail 150,000,000 Earth Sun Piece of rock that orbits the Sun Orbit planets Does not have enough mass to clear an area around it Man-made objects

Mercury, Venus, Earth, Mars Jupiter, Saturn, Uranus ,Neptune Mercury, Mars, Venus, Earth, Neptune, Uranus, Saturn, Jupiter

No atmosphere  no weather, No moon Revolves the fastest No moon Hottest Planet Has oxygen in atmosphere, 1 Moon Sustains life Can be seen without a telescope 2 moons The “Red” planet Red spot  Giant Storm, Has rings 60+ moons, Largest planet 31+ moons Has the most rings 27+ moons Has rings Longest year 13+ moons

The sun is a star. The center Hydrogen & Helium Planets, comets, asteroids, dwarf planets Average size, average temperature NUCLEAR FUSION! 2 Hydrogen atoms get stuck together and make Helium H + H  He + Light + Heat Hydrogen & Helium

Measure height of land formations Measure temperature Take pictures Track weather Test for composition Galileo Allowed us to see space objects closer and in more detail. Uranus and Neptune cannot be seen without a telescope. The Hubble Space Telescope

Mass: increase mass = increase gravitational force Distance: increase distance = decrease gravitational force Their revolution creates an outward force (centripetal force) that helps fight against the pull of gravity from the sun. Satellites need to be launched at the perfect speed so they can reach the perfect distance away from the Earth. At this distance, the gravitational force between the satellite and the Earth are equal so the satellite does not fall back to Earth of get lost in space.

On Earth, astronauts have the surface of the planet holding the space craft they are in up. However, in space, there is no ground holding everything up. As a result, they are always “falling” back to Earth. ↑ ↓ The gravitational force between an object and the Sun will decrease as the object moves towards the edge of the solar system.

Since the moon has less mass than Earth, you would weigh LESS on the moon. Your mass does not change when you visit the moon because your body has not changed. Space stations, space capsules, space shuttle Satellite, Probe, Lander, Rover, Rockets GPS, Communication (radio, TV), Data collection, Tracking weather

Perform complex experiments Study effects of low gravity on body Personal Experience Harmful to human body Weak bones & muscles Risk of death Costs more $  supplies Cannot travel very far in space Sending a person to space is very risky but we study their bodies to possibly help people in Earth. Costs less $ Travels farther than people Stay in space longer Remote sensing devices No study on human body No complex experiments Can break  no one to fix anything Although unpiloted missions cannot perform complex experiments, their remote sensing devices can gather information from far way places and for longer periods of time.