Earth orbit axis tilt rotation [animated pictures and text]

• 
  All of the planets go around
  (orbit) the Sun in an
  anti-clockwise direction
  (opposite to a clock)
  
• 
  It takes the Earth 365
  days (one year) to orbit
  the Sun. Can you see
  the Moon orbiting the Earth?
  
• 
  So Earth orbits (revolves
  around) the Sun
  but also rotates (spins)
  anti-clockwise on its axis.
  
• 
  The axis is an imaginary
  line through the Earth,
  shown here in yellow.
  
• 
  However, at some point in history
  it is thought that Earth was in
  collision with another
  planet called Theia.
  
• 
  This caused the Earth to
  develop a tilt of around
  23 degrees.. This animation
  shows how big that is.
  
• 
  So now the Earth rotates
  on its axis with
  a tilt of 23 degrees.
  
• 
  As the Earth orbits the Sun
  things have now changed.
  
• 
  However, the angle and
  direction of the tilt
  is always the same
  throughout the year.
  

Look at each of the pictures and read the text underneath about the Earth Sun Planets Solar System.