Planet - Any large celestial body that revolves around the Sun in the solar system., Meteor - This object is what a meterooid is called when it enters Earth's atmosphere., Neptune - This outer planet is farthest from the sun at 4.5 billion kilometers., Sun - This object is the largest object in our solar system. Its gravity holds the solar system together., Inner Planets - Terrestrial planets. They have a solid surface., Earth's Moon - Humans have landed on it. It orbits the Earth., Telescope - This tool was invented in the 17th century to study the universe., Meteoroid - This object is the smaller version of an asteroid and is found in space., Venus - This planet is closest to Earth. It has an atmosphere that is mainly carbon dioxide and a small bit of nitrogen., Mercury - This terrestrial planet has no moon and is 58 million kilometers fro the sun., Comet - This object is made of frozen gas, rock and dust.It can have a "tail" when it gets close to the sun., Meteorite - This is the new name for a meteoroid that falls to Earth and lands on Earth's surface., Asteroid - This is the largest version of a rock in space. They vary in size and mass., Moon - A celestial object that orbits a planet., Outer planets - Gas planets. Jupiter, Saturn, Uranus, and Neptune., Uranus - This planet takes 84 Earth years to revolve around the Sun. It rotates backwards., Galileo Galilei - The scientist that invented the telescope to study space. 17th century., Solar System - A group of objects held together by our Sun., Asteroid Belt - Separates the inner and outer planets. The location where these objects tend to cluster., Mars - A terrestrial planet that has almost the same rotation period as Earth. Approximately 228 million kilometers from the Sun., Earth - A terrestrial planet who's atmosphere is composed of mainly oxygen and nitrogen., Rover - This was sent to study the planet Mars., Jupiter - This gas giant has dozens of moons and the atmosphere is made of mostly hydrogen, Saturn - This planet takes 29 Earth years to revolve around the Sun., Revolution - One complete orbit of the Sun. Earth takes 1 year., Rotation - One complete spin on the planet's axis. Earth takes 1 day., Composition - What is it made out of., Habitable - Living organisms can survive., Solar Eclipse - When the Moon blocks the Sun., Excellent - How you are going to do on the test!,

Solar System Terms and Facts (based on StemScopes activity)

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