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					Eclipses
               Definition of Eclipse
 “the obscuration of the light of the moon by the intervention of the earth
  between it and the sun (lunar eclipse) or the obscuration of the light of
  the sun by the intervention of the moon between it and a point on the
  earth (solar eclipse).”
   -Dictionary.com
 “an astronomical event that occurs when one celestial object moves
  into the shadow of another, partially or fully obscuring it from view.”
  -Space.com
 “An eclipse occurs at those times when the Moon moves into a position
  of direct alignment with the Sun and the Earth.”
   -Earthview.com
         Definition of Eclipse
 An Eclipse occurs when one celestial object
  (Planet, Star, Moon,etc) blocks the light of
  another celestial object, blocking the view of
  the celestial object partially or completely.
                Eclipses
 There are 3 types of Eclipses
  - Solar Eclipses
  - Lunar Eclipses
  - Annular Eclipses
 Solar Eclipses occurs when the moon
  passes directly between the Sun and the
  Earth, blocking out the Sun.
 Lunar Eclipses occurs when the moon and
  the Sun are on opposite sides of the Earth.
              Solar Eclipses
 There are 2 types of Solar Eclipses, Total Solar
  Eclipses and Partial Solar Eclipses.
 This is an Example of a Total Solar Eclipse:




Picture taken from:
  http://www.earthview.com/tutorial/causes.htm
         Total Solar Eclipses
 In the narrow path of totality, the moon
  seems to have blocked out the sun
  completely, turning daylight in darkness.
 However, in the penumbra, people would
  experience a partially blocked out sun,
  where the moon only blocks out part of the
  sun.
        Partial Solar Eclipses
 The picture before this was a Partial Solar
  Eclipse.
 The moon was blocking part of the sun,
  hence, a partial solar eclipse.
 Partial Solar Eclipses happens when the
  penumbra hits the Earth but the path of
  totality missed the Earth, either going above
  the North Pole or going below the South
  Pole.
             Annular Eclipse
 This occurs when the moon’s umbra passes
  across the Earth, but is not quite long enough to
  touch the surface; the shadow cone diminishes to
  a point before reaching the Earth.
 This happens when the moon is farther out of the
  orbit around the Earth. Hence, the moon appears
  smaller and hence a ring of sunlight remains
  around the moon.
             Lunar Eclipse
 This occurs when the Moon and the Sun are
  directly opposite of each other around the
  Earth
 The Moon would turn dark, sometimes
  reddish-copper.
               Bibliography
 http://2010eclipse.blogspot.com/2010/02/diamond-
  ring-effect-of-eclipse-on-15th.html
 utahskies.org
 http://www.earthview.com/tutorial/causes.htm
 http://www.space.com/eclipse/
 http://eclipse.gsfc.nasa.gov/eclipse.html
 http://eclipse.gsfc.nasa.gov/solar.html

				
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posted:9/10/2010
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