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All About Neptune

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Emmy Thi

on 1 April 2015

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Transcript of All About Neptune

What would happen if humans
went to Neptune?
First of all, humans would suffocate from the
gases, then they would be squashed by the gravity, next they would be shredded to pieces by the super sonic winds and finally,humans would freeze to death. Once you get past the thick clouds of the atmosphere, the temperature will start to change as you get closer to the core, which can get as hot as 5000 degrees! You can't really land on Neptune because it doesn't have a solid surface. If you were to send a spacecraft to Neptune it would sink to the core.
Fun Fact
Even though, Neptune is the eight planet and the farthest from the Sun, Neptune still has heat! But only the
has heat.

All About Neptune
Who discovered Neptune? When, Where and How?
The people that found Neptune were Johann Galle, Heinrich D'Arrest, Urbain Verrier and John Adams. These amazing people found Neptune on September 23, 1846. But, how, was Neptune discovered? Neptune was discovered by math in the Urania Observatory, in Berlin. It's thanks to them that we have this awesome planet.
How did Neptune Get it's Name? What is Neptune's Symbol?
Did humans ever visit Neptune?
What does Neptune look like?
Hey guys! Our group decided that for our solar system project we wanted to research the planet Neptune. So that's what we're going to be talking to you about today! We hope you enjoy and learn a lot about one of the amazing planets in our beautiful solar system.
Neptune has a very nice deep blue color. Why? It's because of all the methane.
Methane is a colorless, odorless flammable gas.

The methane, which is in the cloud, take out the colors orange and red. Neptune is also a light blue color with some white and has some rings. These rings are very faint but they're still there. That's not all that's interesting about Neptune,there is also a
dark spot.
That dark spot was first found in 1993. It has been said that this dark spot has covered 8,000 miles!

That's us!!!
Fun Fact
The pictures you see of
Neptune, is really just
it's clouds. Who knows? Maybe Neptune could be a whole different color on the inside!
Being discovered after all the other planets, astronomers decided to continue to name the planets after Roman Gods. The Roman God 'Neptune' is the god of water, and because of the blue color of the planet it was named after him.

Neptune gets it's symbol by the Roman God. The symbol represents Neptune's trident.

Fun Facts
1. Neptune is equal to the greek god Poseidon. One of Neptune's moons name is Triton. It is believed that Triton was a merman,son of Poseidon and his wife Amphitrite.
2. The 3 prongs on Neptune's Trident represent a couple of things. Here are a few:
Becoming, Being, Passing Away
Birth, Life, Death
Mind, Body, Spirit
Past, Present, Future
Johann Galle
John Adams
Heinrich D'Arrest
Urbain Verrier
Urania Observatory
Orbit and Rotation
Neptune orbits the sun at an average distance of 4.5 billion km, and rotates once in 16 hours.
Perihelion: 4.45 billion km or
29,77 astronomical units
Aphelion: 4,536,870,000 km
Length of one day: 16h 6m 36s
Fun Fact
Did you know that just
one astronomical unit
is equal to
149,597,871 km!
WOW! That is a lot of converting!!!
the other
Neptune's Moons
Neptune has 13 moons:
Naiad,Larissa,Thalassa,Galatea,Despina,Proteus,Halimede,Psamathe,Neso,Sao,and Laomedeia.
All Neptune's moons were named after sea creatures or Gods/Goddesses in Greek and Roman Mythology. Little is known about the moons except for Triton, which is the first discovered moon of Neptune.
Triton is the largest moon and was discovered on October.10.1846 by William Lassell, 17 days after Neptune was discovered. Triton's surface is covered in frozen nitrogen, a mostly water-ice crust dotted with geysers.
Dark Spot
photograph taken by Voyager 2 in 1989
Nereid is the third-largest moon of Neptune. This moon was discovered by Gerard Kuiper on May.1.1949. Nereid is so far from Neptune that it takes 360 Earth days or 1 year to make one orbit.
This fuzzy Voyager 2 image of Nereid was taken in 1989
Proteus is the second-largest moon and was discovered by the Voyager 2 spacecraft. Proteus was found on June.16.1989. This is funny because Nereid was discovered 33 years earlier. Gerard Kuiper had missed Proteus because it was too dark and too close to Neptune for telescopes to see. That's why Nereid was discovered before Proteus.
Fun Fact
Triton has a retrograde orbit, which means it orbits in the opposite direction of Neptune's rotation.
Humans have never been to Neptune before...in person. Astronomers have sent a spacecraft to go to Neptune. This spacecraft is called Voyager 2. Voyager 2, flew from earth on August 20, 1977. It flew 3,100 miles of Neptune in 1989. Voyager 2 didn't just see Neptune, it also saw Neptune's moons. It's been said that Galileo,
(the one who found Callisto, Europa, Ganymede, and Io. 4 of the 63 moons of Jupiter)
,also saw Neptune 2 centuries ago, but didn't recognized it as a planet.
Fun Fact
Did you know that the Voyager 2 spacecraft is still in space!
You can still see how far it is from Earth and the Sun, in kilometers and astronomical units. Just go to this web site:
Order from the sun
Distance from the Sun:
Distance from the Earth
2.7 billion miles
Williiam Lassell
Gerard Kuiper
What's the weather like
on Neptune
Is there water on Neptune?
Surface Conditions
Does Neptune have
any rings?
What are some problems and solutions
of sending humans to Neptune?
What modification would be needed for
humans to live on Neptune?
Weather on Neptune is very harsh. Bands of storms circle the planet. Neptune has huge storms with high winds.The winds speeds can go up to 2100 miles per hour! Neptune is one of the coldest planets in the solar system so the weather depends on the heat of the core.
Some of the problems of sending humans to Neptune is that Neptune is very far. It took the Voyager 2 spacecraft 12 years to get to Neptune. 12 YEARS! That means you would have to be in a spaceship for a long time. You would starve to death and probably run out of oxygen. You would have no place to land, your ship would get crushed by the massive gravity and be ripped apart by the winds. But most importantly, you'll just
But problems always have answers. If you still want to go to Neptune, then the planet has to be closer or you would have to have a very fast spaceship. The spaceship also has to be extremely durable to get inside the planet. You'll definitely need a huge supply of O2,
(Oxygen gas)
, food and water.
Voyager 2 Spacecraft
Can you stay in
this for 12 years?
The first thing that humans need to do is to adapt to slightly increased gravity. (only 1.14 times on Earth)
Other than this, there is nothing else we can adapt to. Why? The temperature on Neptune can be -330f or -201.111c. This isn't something that humans can adapt to. Also there is NO oxygen, so you can't breathe. Finally, it would probably be very expensive and people might say it's dangerous.
Yes, Neptune has water. Neptune has ionized water (electrically charged), ammonia, and some methane ice. Neptune has water and ice mixed with a lot of hydrogen and helium. There's very little water at the cloud top, but there's more water if you go to the core. The water is visible at the upper atmosphere and might have some more water as you go deeper into the planet.
Yes Neptune has rings. Neptune has 3 main rings, but has 5 in total. These rings are very,very,very faint and are made up of small rocks and dust. Because of the material the rings are made of, Neptune's rings are neutral in color.
The wind speeds are usually 1,500 miles per hour. It gets as cold as -218c and gets as hot as 5000c.The average temperature is -214c. The surface pressure is predominately made of hydrogen and helium with some methane.
Thank you!
Thank you all so much for listening. We hope you enjoyed and learned some interesting things about Neptune. Now you know a bit more about our solar system.
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