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Solar System

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    Solar System
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  • How much of the solar system's mass is the sun?
    99.9%
  •  25
  • What planet is closest to the sun?
    Mercury
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  • What are the four terrestrial planets?
    Mercury, Venus, Earth, Mars
  •  25
  • What is the biggest planet?
    Jupiter
  •  15
  • How many planets have moons?
    six
  •  25
  • How many planets are there in total?
    eight
  •  15
  • What are the last four planets called?
    Gas giants
  •  25
  • What pulls the planets close to the sun?
    gravity
  •  25
  • Name something, other than planets and the sun, that can be found in the solar system
    comets, asteroids, centaurs, dwarf planets...
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  • How many stars in the Milky Way galaxy?
    200 billion
  •  25
  • What is the sun mostly made of?
    Hydrogen and helium
  •  25
  • Name all eight planets
    Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
  •  25
  • Which planet has the biggest rings?
    Saturn
  •  15
  • Which dwarf planet has a name that starts with 'P'?
    Pluto
  •  25
  • What do we call the movement of a planet around the sun, or a moon around a planet?
    An orbit
  •  25
  • What do we call the solar wind that is visible from Earth?
    Aurora Borealis (or The northern lights)
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