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Astronomical Unit the average distance form the Earth to the sun about 150million kilometers = 1 AU
Planet an object that orbits the Sun, has a spherical shape, and has a mass much larger than the total mass of all other object
Rotation the time it takes an object to complete one turn on it's axis
Revolution the time it takes an object to travel once around the sun
Sun the largest body in our solar system around which the Earth and other planets revolve and receive heat and light
Mercury the smallest planet and the nearest to the sun
Venus the second planet nearest the sun visible as a bright morning or evening star
Earth the third planet nearest the sun the planet which life is found
Mars the fourth planet nearest the sun. Known as the red planet
Asteroid large and small rocks or metallic masses orbiting the sun
Galilean Moons the four largest of Jupiter's 63 moons; discovered by Galileo Galilee
Meteoroid a natural chunk of rock or dust existing outside the Earth's atmosphere
meteorite the remains of meteoroid that strike the surface of Earth or the Moon
meteor a small meteoroid that burns upon entry of Earth's atmosphere
comet a celestial body of ice, dust, and rock with an elongate and ellipitical orbit
Jupiter the fifth planet nearest the sun. It is known for it's 7 bands of rings
Saturn sixth planet nearest the sun. It's axis is so tilted that it seems to roll along its orbit
Uranus the seventh planet nearest the sun. the axis is so tilted that it seems to roll along its orbit
space shuttle reusable spacecraft that transport s people and materials to and from space
Mercury Mission (1958-1963) The goal was to get a man and a rocket in space and back to Earth safely
Gemini Mission (1961-1966) The goal was to develop docking methods, complete space walks, and improve re-entry into Earth's atmosphere.
Apollo Mission (1967-1972) The goal was to land the first American astronaut on the moon and return safely to Earth.
Skylab (1973) NASA's Science lab in space was intended to investigate if humans could survive longer in space, perform complex tasks, and complete experiments while in space.
Space Shuttle Mission (1981-2010) A space vehicle used for near-Earth travel; not intended for deep space travel.
International Space Station (2000-present) The ISS is a Science lab shared by many nations. It is a permanent residence to maintain and support a crew of astronauts. They perform many experiments and work together with other nations.
Orion spacecraft A space vehicle to take humans into deep space.
Neptune the eighth and final planet from the sun. It is similar to Uranus in size and has rings
Created by: jelena lalic