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solar system vocabulary

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  • The fourth planet of the Solar System
    Mars
  • The collection of eight planets and their moons in orbit around the Sun, together with smaller bodies in the form of asteroids, meteoroids, and comets
    Solar System
  • The force that attracts a body toward the center of the Earth, or toward any other physical body having mass
    Gravity
  • The third planet of the Solar System
    Earth
  • A natural satellite of any planet
    Moon
  • A hole in the ground caused by an object from space
    Crater
  • An optical instrument used to observe objects that are far away.
    Telescope
  • The planet that is closest to the Sun
    Mercury
  • An expert in astronomy/ a person who studies astronomy
    Astronomer
  • The central body of the Solar System
    Sun
  • The sixth planet in the Solar System
    Saturn
  • A celestial object consisting of a nucleus of ice and dust and, when near the sun, ana “tail” of gas and dust particles pointing away from the sun
    Comet
  • The curved path of a celestial object or spacecraft around a star, planet, or moon
    Orbit
  • The branch of science that deals with celestial objects, space, and the physical universe as a whole
    Astronomy
  • The second and brightest planet in the Solar System
    Venus
  • A person who is trained to travel in spacecraft
    Astronaut
  • The envelope of gases that surround a planet
    Atmosphere
  • A body of hot gases located in outer space
    Star
  • The eighth planet in the Solar System
    Neptune
  • The seventh planet in the Solar System
    Uranus
  • The last and smallest planet in the Solar System
    Pluto
  • The Russian term for “astronaut”
    Cosmonaut
  • The fifth and largest planet in the Solar System
    Jupiter
  • A system of billions of stars, together with gas and dust, held together by gravitational attraction
    Galaxy
  • A celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such
    Dwarf Planet
  • A small rocky body orbiting the sun.
    Asteroid
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