Other Solar System Objects A Review of The

Other Solar System Objects

A Review of The Nebular Theory Nebula Begins to pull together (gravity) about 4. 6 BYA Protostar Protoplanets Accrete, solar wind blows away H, He Solar System with 8 planets

In addition to planets, our solar system contains… Moons Natural satellite of a planet Vary in size Vary in number

Ring Systems • Collection of dust particles and rocks that orbit a planet • Found around all Jovian planets

Comets • A space object made of rocks and frozen gasses – a “dirty snowball” • originate in the Oort Cloud

Comets • Some have a regular orbit – short or long period en. wikipedia. org/wiki/153 P/Ikeya-Zhang

www. acmecompany. com/Pages/stock_space. html www 4. nau. edu/. . . /Meteorite/Book-Glossary. C. html

www. nasaimages. org/luna/servlet/detail/NVA 2~14~14 ~24799~124515: Comet-Hale-Bopp museumvictoria. com. au/. . . /planets/comets/ www. space. com/bestimg/index. php? guid=45 b 0 fd 31 f 065 d &cat=bestcomet

Asteroid • A space object made of rocks and metals • Size can vary • Occur in asteroid belt Gaspra Eros

www. foxnews. com/story/0, 2933, 230301, 00. html • Meteor – a streak of light one sees when a space object (usually a small asteroid) burns up in Earth’s atmosphere (because of… friction)

Wales – October 2003 www. rense. com/general 42/ukteen. htm

Meteor Shower – period ( a few hours or nights) with a large number of meteors Persiades – Aug 12 www. astronet. ru/db/xware/msg/1161670 Orionides – Oct 16 – 21 Geminides – Dec 7 - 15 www. jarf 1. wordpress. com

Meteorite • A piece of the object that hit our atmosphere and lands on Earth • Up to 200 a day (most are “specks”)

Meteoric Bombardment Why is there so little evidence on Earth? The Moon has blocked a lot of shots Atmosphere – objects burn up, weather and erosion Many craters are under water or under plants Plate tectonics

Even So… Barringer Crater, AZ Labrador, Canada Sahara Desert

Even So… Chicxulub Crater - 65 million years ago, 10 to 20 km across 2004 MN 4 – “Apophysis” –pass by in 2029; gravity could set up a future impact on April 13, 2036 Sahara Desert