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Stars and the Solar System

  • All natural objects in the sky are celestial objects.
  • The Moon
    • New Moon day → when moon is not visible
    • Full Moon day → when full moon is visible
    • Gap between consecutive new moon day and full moon day is of 15 days.

    • Rotational period and revolution period of moon are the same (almost 29 days).


  • Moon’s surface
    • Because of lack of atmosphere, one cannot hear any sound on moon.


  • The Stars

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