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Neptune
By: Megan Tharpe
And
Ashley Elder
Neptune Facts
 Neptune is the 8th planet from the sun
 Its orbit: 4,504,000,000 km from sun
 Diameter: 49,532 km
Neptune
In Roman mythology Neptune (Greek Poseidon)
was the god of the Sea.
 Neptune has been visited by only one spacecraft,
Voyager 2 on Aug 25 1989.
 Neptune's blue color is largely the result of
absorption of red light by methane in the
atmosphere
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Neptune
Neptune's winds are the fastest are the fastest in
the solar system, reaching 2,000km/hour.
 Like Jupiter and Saturn, Neptune has an internal
heat source -- it radiates more than twice as much
energy as it receives from the Sun.
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Neptune Facts
Neptune's rings have been given names: the
outermost is Adams, next is an unnamed ring coorbital with Galatea, then Leverrier, and finally
the faint but broad Galle.
 Neptune is one of the 2 planets that cannot be seen
without a telescope
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Planet Neptune
It has 13 moons
7 small named one’s
Facts
If Neptune were hollow it could contain nearly 60
earths
 It orbits the sun every 165 years
 A day on Neptune is 16 hours and 6.7 minutes
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NEPTUNE
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Neptune was discovered on September 23, 1846
by: Johann Gottfried Galle
The first two thirds of Neptune is composed of a
mixture of molten rock, water, liquid ammonia and
methane. The outer third is a mixture of heated gases
comprised of hydrogen, helium, water and methane.
Methane gives Neptune its blue cloud color.
Neptune and its Atmospheric
Composition
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Neptune is a dynamic planet with several large,
dark spots. The largest spot, known as the Great
Dark Spot, is about the size of the earth and is
similar to the Great Red Spot on Jupiter.
Atmospheric Composition:
Hydrogen: 85%
Helium: 13%
Methane: 2%
Neptune

: Planetary Symbol
Tilt of axis: 29◦ 36”
Stormy planet with super cold winds around 1,200
mph.
Shockwave #1
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Shockwave
Neptune Facts
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Pluto last crossed Neptune’s orbit on Jan.23, 1978
and remained within in it till Feb. 11, 1999
Neptune is about 30 times as far from the sun as is
earth.
Its diameter at the equator is 30,775 miles or almost
4 times that of earth.
Neptune and it moon Triton

The blue clouds are mostly frozen methane, the main
chemical in natural gas—the other object shown is
is Neptune’s moon Triton
Neptune’s Rings
Neptune’s outermost ring, 39,000 miles from the
planet
 It has 3 conspicuous rings and 1
Faint ring

Shockwave # 2
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http://library.thinkquest.org/J0110506/neptune
WP.swf
Works Cited
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http://www.nineplanets.org/neptune.html
http://www.solarviews.com/eng/neptune.ht
m
http://www.nasa.gov/worldbook/neptune_w
orldbook.html