This document provides information about various celestial bodies including comets, asteroids, meteoroids, meteors, and meteorites. It describes the key parts of comets like the nucleus, coma, and tail. Specific comets discussed include Halley's Comet which can be seen every 76 years. Asteroids are defined as small solid objects that orbit the sun, with the largest concentration in the Asteroid Belt between Mars and Jupiter. Temperature extremes on asteroids are noted. The document also explains the differences between meteoroids, meteors, and meteorites and describes meteor showers.

1. Celestial Bodies
By J.T.
http://www.enchantedlearning.com

2. Comets
• A comet is like a big
dirty snowball made
out of water,dust and
many different gases.
• A comet can travel up
to 100,000 m.p.h.
• You can see an
asteroid without a
telescope every three
years.
http://www.enchantedlearning.com/Home.html

3. Parts of a Comet
• The three parts of a
comet are the nucleus,
the coma, and the ion
tail.
• The tail of the comet
always points away
from the sun this is
because of the strong
solar winds.
http://www.enchantedlearning.com/subjects/astronomy/comets/

4. Halley’s Comet
• This comet is called
Halley’s comet
because it was
discovered by Sir
Edmund Halley.
• You can see Halley’s
comet every 76 years.
• The tail of Halley’s
comet is 93 million
miles long.
http://www.solar views.com/cap/comet/halley.htm

5. Asteroids
• Asteroids are small
solid objects that orbit
the Sun.
• They are sometimes
called minor planets.
• The Asteroid Belt
located between Mars
and Jupiter is made up
of 5,000 asteroids.
http://www.enchantedlearning.com/subjects/astronomy/asteroids/

6. Temperature
• The average daytime
temperature on an
asteroid is 212 degrees
Fahrenheit.
• The average nighttime
temperature on an
asteroid is –238
degrees Fahrenheit.
http://www.the-solar-system.net/asteroids/asteroids-pictures.html

7. Composition
• Most asteroids are 80
made out of carbon 70
carbon
but, some are made 60
out of other materials 50 metallic
iron
like silicate, metallic, 40
iron/nick
and dark ice. 30 el
20 ice
10
0

8. Interesting Facts
• Asteroids have large
craters on them.
• The really big
asteroids have moons.
• In 1908 a fireball
exploded into Siberia
destroying an ancient
forest and killing a
herd of reindeer.
www.enchantedlearning.com

9. Meteoroids, Meteors, and
Meteorites
• Meteoroids are small
pieces of dust and rock
that are found in space.
• Meteors are meteoroids
that reach the atmosphere.
• Meteorites are meteors
that reach Earth.
http://www.solar views.com/eng/meteor.htm

10. Meteor Showers
• A meteor shower is
when many meteors fall
from the atmosphere on
to Earth.
• The average meteor in a
meteor shower is about
the size of a grain of
sand.
http://co http://comets.amsmeteors.org/meteors

11. The Difference
• This is the difference
between asteroids and
comets.
• They have many
differences but, some
they are also alike in
some ways.
http://www.enchantedlearning.com/subjects/astronomy/activities/venn/cometasteroid/index.shtml

12. Life
• I don’t think people
could live on a comet
right now but, I think
we would be able to in
the future because of
our major
advancements in
technology.
clipart

13. Did You Know?
• Meteors are actually
debris from comets.
• Meteors travel 71
kilometers per second
that’s 2,663 times as fast
as a Randy Johnson
fastball.
http://leonid.arc.nasa.gov/meteor.html