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[[image:horseheadorion_martin.jpg width="820" height="281" align="center" caption="Horsehead and Orion Nebula"]]
 = = =**__8th Grade Astronomy Unit__**=  Objective: To understand the structure of the Solar System.  · Describe how the Earth orbits the Sun and the Moon orbits the Earth. · Describe the Sun (i.e., a medium-size star, the largest body in our solar system, major source of energy for phenomena on Earth’s surface). · Describe how planets, asteroids, and comets orbit the Sun. · Describe meteors (e.g., planetary and comet debris that collides with Earth). <span style="font-size: 14pt; color: rgb(0, 0, 0); font-family: Symbol;">·<span style="font-family: 'Times New Roman'; font-style: normal; font-variant: normal; font-weight: normal; font-size: 7pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"> <span style="font-size: 14pt; color: rgb(35, 31, 32); font-family: 'Arial','sans-serif';">Compare the relationships among the components of the solar system (e.g., composition, size, atmosphere, gravity, distance from the Sun, number of moons). <span style="font-size: 14pt; font-family: 'Arial','sans-serif';">

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