1. Rocket Multistage Rocket Space Shuttles Space ProbeSatellite An object that expels gas in one direction to move in the other. Action- Reaction A rocket that can reduce its weight as it rises by shedding empty fuel chambers Carries humans and equipment into space and back home safely and can be reused again. Gather data from distant parts of the solar system where humans cannot travel. *Cassini *Rovers An object that revolves around another object in space. *Space Station

2. *Tensions between the US and USSR were high during the cold war.  1957-USSR Launches 1 st Satellite: Sputnik 1  Sputnik 2- Nicknamed Mut-nik (Laika Dog)  1958-US launches Satellite: Explorer 1  1958-US establishes NASA  1961-USSR- 1 st human in space Yuri Gargarin  Month later- Alan Sheppard- 1 st American in Sp  Kennedy’s promise to land man on the moon  1962-1 st American to Orbit Earth- John Glenn  1969- US lands the 1 st man on the moon- Neil Armstrong and Buzz Aldrin  1980’s- Begin International Space Station (15 countries)

3.  The inspiration behind all rockets originated from Chinese Fireworks  Rockets use Newton’s 3 rd law of motion, for every action there is an equal opposite reaction.  Escape Velocity is the speed it takes to escape Earth’s gravitational pull. 36,669 m/s (or 7 miles per second) Orbital Velocity is the speed it takes to orbit Earth. (17,000 miles per hour or a little less than escape velocity )