1. Neptune

2. Discovery of Neptune
Neptune was discovered by mathematics. Scientists noticed that Uranus was not always in the predicted position, that another planet must be effecting it’s orbit. In 1846 their predictions were proven correct.
Johann Gottfried Galle, Heinrich Louis d'Arrest, Urbain Le Verrier, and John Couch Adams discovered Neptune.

3. Comparison: Neptune – Earth
Neptune is nearly 4 times bigger than Earth
A year on Neptune is years
You could fit 57 Earth’s inside Neptune

4. Neptune – Earth

5. Where Did it Get it’s Name?
The methane gas in the atmosphere surrounding Neptune causes it to appear as deep blue in color, so Urbain Le Verrier named it Neptune after the Roman god of the sea.

6. Voyager 2 Voyager 2 is NASA’s first spacecraft to observe Neptune.
It took 12 years to reach Neptune.
Discovered 6 of Neptune’s moons.

7. Pictures by Voyager 2
Neptune
Rings

8. Weather on Neptune
Neptune has the most dangerous, powerful weather in the whole Solar System.
Huge storms with winds up to 1,305 mph.
Also one of the coldest planets in our Solar System with temperatures down to Celsius.

9. Neptune’s Moons
Neptune’s 13 moons are Triton, Laomedeia, Nereid, Larissa, Proteus, Naiad, Despina, Galatea, Thalassa, Halimede, Neso, Sao, and Psamathe.
Named for various lesser sea gods and nymphs in Greek mythology.

10. Triton Neptune’s largest moon.
Only moon in the solar system that orbits in a direction opposite to the rotation of its planet.
Ice volcanoes spout a mixture of liquid nitrogen, methane and dust, which instantly freezes and then snows back down to the surface.

11. Moon
Distance from Neptune
Naiad
48,227
Thalassa
50,075
Despina
52,526
Galatea
61,953
Larissa
73,548
Proteus
117,647
Triton
354,800
Halimede
15,728,000
Nereid
5,513,400
Sao
22,422,000
Laomedeia
23,571,000
Psamathe
46,695,000
Neso
48,387,000

12. The Great Dark Spot
This was a huge spinning storm on the Southern atmosphere of Neptune, it was about the size of the entire Earth.
Wind speeds were measured up to over 1,500 mph during this storm.

14. Composition

15. Neptune’s Symbol A trident, or three- pronged fork.
Weapon associated with the Roman god.

16. Neptune’s Rings
Neptune has 6 rings: Galle, Le Verrier, Lassell, Arago, Galatea, and Adams. Named after the astronomers .
They are difficult to see because they are dark and vary in size and density.
The rings are all composed of at least 20% dust, some up to 70% and small rocks.

17. Rings Distance from Neptune Galle 41,900 Le Verrier 53,200 Lassell
55,200
Arago
57,200
Galatea
61,950
Adams
62,930

18. Neptune & The Sun
It takes Neptune years to orbit the sun because it orbits much farther from the sun than Earth does, it has only completely orbited the sun one time since it’s been discovered.
The average distance of Neptune from the Sun is 2,795,084,800 miles .

19. Neptune Facts One day on Neptune is 16.1 hours.
The gravity there is similar to Earth’s .
Every time you look at Neptune it will be different.
Neptune is the 8th planet from the sun.
Fourth largest planet.

20. Work Cited http://www.universetoday.com http://www.space.com
sting-Facts-About-Neptune.htm