Planet Neptune

By: Diamond-Charlay

History

• Who named Neptune: Neptune was god that did not have a planet in his name.

• What does Neptune mean: God of the sea

Discovery

• Some sources that the astronomers Galle and d'Arrest discovered Neptune on September 23, 1846

• Other people say that Adams in 1846.

Planet Structure

• Solid rock core, gas and ice mantle inside

Atmosphere

• 80% hydrogen,19% helium,0.5 methane and traces of other compounds

• diameter: 49,532 km (equatorial) mass: 1.0247e26 kg

Missions

• How long are its years and days?

• A year on Neptune lasts for 165 Earth years.

• A day on Neptune is shorter than a day on Earth.

• This gas planet spins, or rotates, once every 16 hours.

Motion

• orbit: 4,504,000,000 km (30.06 AU) from Sun.

• Neptune is the eight planet from the sun.• Neptune orbits slowly because it is farther

away from the sun.• Size, color Neptune seems to be a twin to

Uranus.• Neptune does not spin on its side; its axis

tilts only a little more than that of Earth.

Data

• Diameter: 49,528 km• Average distance from the sun:4.5 billion km• Mass:10,240x10^22 kg• Surface gravity (Earth=1):1.12• Average temperature:-225c• Length of sidereal day:16.11• Length of year:164 Earth days• Number of observation moons:8*

other

• The rings of Neptune are made up of fairly small, very dark clumps of rock.

• Scientists think that most of these clumps are about the size of a small car.

• There is also a large amount of dust in the rings. one of the rings has a twist in it.

• Uranus orbit didn't seem to obey the laws of physics.

• Something was making Uranus move unexpected.

sources

• http://www.wordsources.info/neptune.html

• http://www.wordsources.info/neptune.html

• http://://www.physorg.com/newman/gfx/news/2004/neptune.gif

• http://gtresearchnews.gatech.edu/images/neptune2.jpg

• http://2.bp.blogspot.com/_EBr52HcHJfk/SHs0-L8MkzI/AAAAAAAAAC8/eJp-3pQGhpc/s400/Neptune_Int-browse.jpg

• http://www.spacedaily.com/images/neptune-diamond.jpg• http://www.mikeoates.org/naw96/img/neptune/neptune.jpg• http://www.biochem.szote.u-szeged.hu/astrojan/neptune.jpg• http://www.astro.keele.ac.uk/~rdj/planets/images/Planet%20comparisons/600px-

Neptune,_Earth_size_comparison.jpg• http://atropos.as.arizona.edu/aiz/teaching/a204/images/neptune.gif