Heliocentric - Everything revolves around the sun, Geocentric - Everything revolves around the Earth, President Kennedy - Got money for the Space Program, Yuri Gagarin - First human in space, Telescope - Invented in 1600s, helped us better understand the solar system, Mathematics - Absolutely necessary in our understanding of the solar system, International space station - research lab with a permanent crew, Space shuttle - reusable space craft to carry supplies and people, Rover - Recent invention that allowed us to learn more about Mars, Hubble Telescope - Allowed us to get a clear view of space without the Earth's atmosphere disrupting the view, Galileo - Saw moons orbiting Jupiter, this supported the heliocentric model,

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