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Neptune
Josh Kim
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How Neptune got its name
Urbain Le Verrier ( Who discovered the planet) wanted to
name the planet himself and named it after the Roman sea
god Neptune or in Greek Poseidon
Discovery
•
Johan Gottfried Galle, Heinrich Louis d’Arrest, Urbain Le Verrier, and John Couch Adams were
the the four discoverers of Neptune.
•
Adams and Verrier used mathematics to predict the gravity
•
Galle and d’Arrest observed the planet.
Distances
• Order from the sun: Neptune is the 8th planet from the sun
• Distance from the Sun (km): 4,498,252,900km
• Distance from Earth (km) 4.3 billion km
Planet measurements
• Mass: 1.0243x10(26) kg
• Volume 6.254x10(13) km
• Density 1.64 g/cm(3)
• Gravity 11.15 m/s(2)
Would Neptune float or sink in water?
• Neptune will sink because it is more dense
than water.
Orbit and rotation
• Orbiting the Sun: 164.79 years to orbit the sun
• On its own axis: it takes 16Earth hours to
rotate on its own axis
Atmosphere
• Neptune is made of hydrogen and helium and
some methane. The methane gives Neptune
its blue color.
Temperature
• 1. Temperatures on Neptune range from -270 to -370
degrees Fahrenheit
• 2. Neptune's Temperatures are about 72 degrees
kelvin which is 200 degrees colder than Earth
Composition and Atmosphere
1. Neptune is a gas giant. The planets surface is made of hydrogen, helium,
and methane.
2. The internal composition is made of rock and ice.
3. Neptune is a big outer planet. It looks a lot like a bouncy ball. It also looks
like Earth without land.
Weather
• The weather on Neptune is made up of Huge
storms and extreme high winds.
Rings
• The rings on Neptune were discovered in 1984
in Chile by Patrice Bouchet, Reinhold Häfner
and Jean Manfroid . Neptune has 6 rings and
colors range from white to blue. The rings are
made of ice, dust, and rock.
Moons
Triton was discovered by William Lassell in 1846. After Neptune was
discovered Nereid Was discovered by Gerard P. Kuiper in 1949. The third
moon named Larissa was first observed by Harold J. Reitsema, William B.
Hubbard, Larrt A. Lebofsky and David J. Tholen on May 24, 1981.
The Voyager 2 discovered 5 inner moons Naiad, Thalassa, Despina Glatea and
Proteus.
In 2002 and 2003 ground based telscopes found 5 outer moons: Halimede,
Sao, Psamathe, Laomedeia and Neso
Types of water on Neptune
• Solid form: ice
• Liquid: Water
• Gas: Steam
What if…?
• What if a human traveled to Neptune?
If a human traveled to Neptune the spacecraft that
they are traveling in would be knocked out by the high
winds on Neptune. It is also very cold and humans will
freeze to death. There is also no oxygen. The person
will also be squashed to death
Fun Fact
• In Roman mythology, Neptune is the god of
the sea which in Greek Mythology id
Poseidon.