Comets
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Comets Comets Presentation Transcript

  • Comets By Trace January, 2010
  • Comets are huge objects in space that are made of ice and dust.
  • They move around the sun in an oval path.
  • Scientists learned about them when five space rockets flew past a comet.
  • Their tail is 100 million miles and its nucleus is 9 miles.
  • Halley’s Comet passes by us every 76 years.
  • Its front is like a dirty snow ball.
  • They can have one or two tails.
  • Sources
    • Article-Comet
    • Encyclopedia-World book
    • Year- 2008
    • Article- Comet
    • Encyclopedia- World Book Discovery
    • Year-2009
  • Picture Sources
    • http: //grcimagenet . grc . nasa .gov/GRCDigitalImages/1995/1995_02395L.jpg
    • http: //photojournal . jpl . nasa .gov/browse/PIA03652.jpg
    • http: //photojournal . jpl . nasa .gov/browse/PIA02137.jpg
    • http://library01. gsfc . nasa .gov/nix/nixImages/screenimage/GL-2002-001257.jpg
    • http: //photojournal . jpl . nasa .gov/browse/PIA08438.jpg
    • http://images. jsc . nasa .gov/lores/S74-17688.jpg
    • http: //solarsystem . nasa . gov/multimedia/gallery/Comet_NEAT .jpg
    • http: //solarsystem . nasa . gov/multimedia/gallery/Comet_LINEAR .jpg