Comets

Comets

By Trace

January, 2010

Comets are huge objects in space that are made of ice and

dust.

Comets are huge objects in space that are made of ice and

dust.

They move around the sun in an oval path.

They move around the sun in an oval path.

Scientists learned about them when five space rockets flew

past a comet.

Scientists learned about them when five space rockets flew

past a comet.

Their tail is 100 million miles and its nucleus is 9

miles.

Their tail is 100 million miles and its nucleus is 9

miles.

Halley’s Comet passes by us every 76 years.

Halley’s Comet passes by us every 76 years.

Its front is like a dirty snow ball.

Its front is like a dirty snow ball.

They can have one or two tails.They can have one or two tails.

SourcesSources

Article-CometEncyclopedia-World bookYear- 2008

Article- CometEncyclopedia- World Book DiscoveryYear-2009

Article-CometEncyclopedia-World bookYear- 2008

Article- CometEncyclopedia- World Book DiscoveryYear-2009

Picture SourcesPicture 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

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