The Nine Planets

1. THE NINE PLANETS

2. Can you name the NINE
planets?

3. The NINE planets

4. Mercury

5. Venus
•Venus is the second planet from
the Sun, and the sixth largest of
all the nine planets.
•Venus' hot temperature is due
to what we call "the
Greenhouse Effect." The large
amount of carbon dioxide in
Venus' atmosphere acts like a
blanket. The heat gets trapped
underneath the thick layer of
clouds. Because the heat has
nowhere to go, Venus gets
hotter and stays hot.

6. Earth
•Average Distance From Sun
•Kilometers: 149,600,000
•Miles: 93,000,000
•Astronomical Units: 1.000
•Length of Year: 365.26 days
•Length of Day: 23 hours 56 minutes 4
seconds
•Average Orbital Speed
•Kilometers/Second: 29.79
•Miles/Second: 18.51
•Equatorial Diameter
•Kilometers: 12,756
•Miles: 7,926
•Earth=1: 1.000
•Mass (Earth=1): 1.000
•Volume (Earth=1): 1.000
•Number of Known Satellites: 1
•The Earth is a small, rocky
planet which supports a
variety of life. As far as we
know, Earth is unique from
all other planets in this
respect.
•The Earth moves around
the sun, taking one year to
go around once. The moon
goes around the Earth. It is
smaller than the sun, but it
looks as big as the sun
because it is much closer to
us.

7. Earth’s
Moon
•The moon is roughly one sixth
the size of Earth. It rotates
around Earth every twenty-
seven days, seven hours, and
forty-three minutes. However,
we only see one side of it
because the other side never
faces the Earth.
•Several Americans have walked
on the moon as part of the
Apollo space program.
Average Distance From Earth
Kilometers: 384,500
Miles: 238,900
Astronomical Units: 0.0026
Length of Year (To Orbit Earth):
27.32 days
Length of Day: 27 days 7 hours 43
minutes
Average Orbital Speed
Kilometers/Second: 1.023
Miles/Second: 0.636
Equatorial Diameter
Kilometers: 3,476
Miles: 2,160
Earth=1: 0.24
Mass (Earth=1): 0.012
Volume (Earth=1): 0.020

8. Moon Picture
•This picture shows you
how the size of the
Earth compares to the
size of the moon.

9. Astronauts left the American flag on
the moon.

10. Mars
•Mars is a small, rocky planet.
There are no seas and it is
always very cold. The air is so
thin that we could not breath it.
It is smaller than the Earth,
though bigger than our moon.
•Mars has permanent ice caps at
both poles made up mostly of
solid carbon dioxide. We know
this as "dry ice." Very strong
winds and vast dust storms
sometimes blow through the
entire planet for months!
•Mars has two tiny moons which
orbit very close to the surface.
Their names are Phobos and
Deimos.

11. Jupiter
Jupiter is the fifth planet from
the Sun and by far the
largest of all nine planets.
Jupiter is not like Earth. It is
made up of gases, so we
could never land a rocket
there.
Jupiter's most outstanding and
interesting feature is called
"The Great Red Spot", which
is a huge storm in Jupiter's
gas.

12. Jupiter’s GREAT red spot
This is a huge storm that has been going for
decades!!!

13. Jupiter’s Rings
•Jupiter has very faint
rings. They are much
more difficult to see
than the rings of Saturn.

14. Saturn
•Saturn is the sixth planet from the
Sun, and the second largest of the
nine planets. Like Jupiter, Saturn
has a surface made up of gas.
•Saturn has rings around it, which
are made of little bits of ice moving
around Saturn. Saturn has eighteen
moons that we know of.
Average Distance From Sun
Kilometers: 1,427,000,000
Miles: 886,700,000
Astronomical Units: 9.539
Length of Year: 29.46 years
Length of Day: 10 hours 39 minutes
24 seconds (at equator)
Average Orbital Speed
Kilometers/Seconds: 9.64
Miles/Second: 5.99
Equatorial Diameter
Kilometers: 120,000
Miles: 74,565
Earth=1: 9.44
Mass (Earth=1): 95.15
Volume (Earth=1): 833
Number of Known Satellites: 22
(plus rings)

15. Uranus
Average Distance From Sun
•Kilometers: 2,870,000,000
•Miles: 1,783,000,000
•Astronomical Units: 19.18
Length of Year: 84.01 years
Length of Day: 17 hours 14 minutes ? seconds
(Retrograde)
Average Orbital Speed
•Kilometers: 6.81
•Miles: 4.23
Equatorial Diameter
•Kilometers: 50,800
•Miles: 31,600
•Earth=1: 4.10
Mass (Earth=1): 14.54
Volume (Earth=1): 63.0
Number of Known Satellites: 21 (plus
rings)
•Uranus is a cold, giant
gas planet which is
made up of mostly rock
and various ices.
Uranus has a faint ring
system and 21 known
moons.
•Uranus is a very odd
planet. It sits on its side
with the north and
south poles sticking out
the sides.

16. Neptune
Neptune is a cold, giant gas planet
which is made up of mostly rock
and various ices. Neptune is
about half as big as Saturn and
has eight known moons; seven
small ones and a large moon
called Triton.
Neptune is usually the eighth
planet from the Sun but
occasionally the ninth planet
Pluto crosses Neptune's orbit
and becomes the "eighth
planet".
Its bluish color comes from its
atmosphere of methane gas.

17. Pluto
•Pluto is the farthest planet from
the Sun (usually) and by far the
smallest of the nine planets.
•Discovered in 1930, Pluto has
always appeared as nothing
more than a dot of light in even
the largest earth-based
telescopes. The Hubble Space
Telescope is able to get better
images of this distant planet.
•Pluto is 2/3 the size of Earth's
Moon but 1,200 times farther
away. Viewing surface detail is
as difficult as trying to read the
printing on a golf ball located
thirty-three miles away!
Average Distance From Sun
Kilometers: 5,913,520,000
Miles: 3,666,000,000
Astronomical Units: 39.44
Length of Year: 248.54 years
Length of Day: 6 days 9 hours 17
minutes
Average Orbital Velocity
Kilometers/Second: 4.74
Miles/Second: 2.95
Equatorial Diameter
Kilometers: 2,294
Miles: 1,425
Earth=1: 0.18
Mass (Earth=1): 0.0022
Volume (Earth=1): 0.013?
Number of Known Satellites: 1

18. Pluto’s size
This shows Pluto on the
left and its moon Chiron
on the right. By
comparing them to the
map of the United
States, you can see how
small they are.

19. Credits
Facts:
Bell , Richard S. . "The Solar System." Stargazer Online.
<http://my.voyager.net/stargazer/solar_system.html>
.
Text:
Smith, Gail . "The Planets." The Planets of Our Solar
System.
<http://scils.rutgers.edu/~gails/planets.html>.