COMETS

by Marco Rubio

what is a comet ?

Lots of scientist think that a comet is a huge chunk of ice that is floating up in space and when it starts getting closer to the sun and earth it starts melting and makes up a comet .They are left over from the formation of stars and planets billions of years ago.As that ball of ice gets close enough to the Sun, its heat begins to melt some of the ice that makes up the comet.

color

Sometimes scientists think that a certain comet will be really bright, but Sometimes they think that a certain comet will be really dim, but may turn out to bright.Comets also are usually very colorful; including such colors as silver, blue, purple and gold and red

size

most of the comets are 6 miles long and 10km wide. dependenig on how close it is to the sun. because the closer it gets to the sun the littler it gets because it starts mealting .


shape

A comet doesn't really have a shape. the shape that it gets depends on how-close it gets to the sun . and how fast it goes .


how fast do comets go?

the fastest a comet can travel is up to speeds of 20,000 miles per hour.
Amazing Comet ISON