Transcript Neptune
Tayyt Walters, Tracy Harmon, Zinhad Jasarevic French astronomer Leverrier and English astronomer John Couch Adams made the mathematical calculations of where Neptune should be. Neptune is the 8th planet from the sun (most of the time) … from 1979-1999 Neptune was the 9th planet because Neptune and Pluto cross paths which caused Pluto to be the 8th planet for 20 years at a time out of Pluto's 248-year orbit. In 2227-2247 is the next time that Neptune will be the 9th planet. Radius- 15,299 miles (24,622 km) Surface Area- 2.941 billion sq. miles (7.618 billion km2) 4th largest planet by diameter 3rd largest planet by mass Among the gaseous planets it is the most dense Atmosphere- Hydrogen 80% Helium 19% Methane 1% Gravitational Field- 1.14 times Earths Gravity NEPTUNE HAS 13 MOONS- Triton- Rotates opposite direction of the rotation on the planet - Nereid- Has one of the most eccentric orbits - Proteus- Odd box like shape - Naiad- May eventually crash into Neptune’s atmosphere because it is in a decaying orbit - Larissa- Neptune's smallest moon - Galatea- Its gravity is believed to cause desterbinces in Neptune’s ring system - Thalassa- Roughly disk-shaped - Despina- Located in Neptune’s faint ring system - Sao- Missed by voyager 2 spacecraft in 1989 because it is so faint and distant from Neptune - Neso- It’s the most distant from its planet than any other known moon in the solar system - Halimede- Its 100 million times fainter than can be seen by the unaided eye - Psamathe- It may be fragments from the break-up of a larger moon billions of years ago - Laomedeia- formed after a collition between a larger moon and a comet or an astroid http://www.cleanvideosearch.com/media/act ion/yt/watch?videoId=uTVFZ_EVU4c http://www.space.com/10199-perplexingneptune-outermost-major-planet.html http://www.cleanvideosearch.com/media/act ion/yt/watch?videoId=UtgpgjeCqZs NASA’s Voyager 2 space satellite was the first and only spacecraft to visit Neptune on August 25, 1989. It passed less than 5,000 km above the planet's cloud tops http://www.cleanvideosearch.com/media/act ion/yt/watch?videoId=COI5LBpvDyU http://www.cleanvideosearch.com/media/act ion/yt/watch?videoId=wIgd9C7NgcA Neptune is covered in thin wispy white clouds which stretch out around the planet. Neptune suffers the most violent weather in our Solar System. One day on Neptune is about sixteen Earth hours It takes one hundred sixty-five Earth years for Neptune to make one complete orbit around the Sun. The largest dark spot seen on Neptune was about the size of Earth and its called The Great Dark Spot Winds blow up to 1,200mph on Neptune http://www.cleanvideosearch.com/media/act ion/yt/watch?videoId=Hui5E0nkdmA 31:30 http://www.cleanvideosearch.com/media/act ion/yt/watch?videoId=y038-R3kwfw 1. 2. 3. 4. What moon rotates in the opposite direction of the planets rotation?? What is the large dark spot on Neptune called?? What element is Neptune's atmosphere made up of?? Who where the two people that discovered Neptune?? http://www.cleanvideosearch.com/media/act ion/yt/watch?videoId=yGSbf5GUWO8 Google http://www.space.com/ http://www.sciencekids.co.nz/sciencefacts/pl anets/neptune.html http://library.thinkquest.org/J0112461/intnep tune.html