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This does not in any way imply that the Core Knowledge Foundation endorses this work.  \nNoncommercial — You may not use this work for commercial purposes.  \nShare Alike — If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.  \nWith the understanding that:  \nFor any reuse or distribution, you must make clear to others the license terms of this work. The best way todo this is with a link to this web page:  \n[http://creativecommons.org/licenses/by-nc-sa/3.0/](http://creativecommons.org/licenses/by-nc-sa/3.0/)  \nCopyright © 2013 Core Knowledge Foundation [www.coreknowledge.org](www.coreknowledge.org)  \nAll Rights Reserved.  \nCore Knowledge Language Arts, Listening & Learning, and Tell It Again! are trademarks of the Core Knowledge Foundation.  \nTrademarks and trade names are shown in this book strictly for illustrative and educational purposes and are the property of their respective owners. References herein should not be regarded as affecting the validity of said trademarks and trade names.  \nTable of Contents  \nWhat’s in Our Universe?  \nUnit 7 reader  \nChapter 1: The Sun, Earth, and Our Solar System 6  \nChapter 2: The Moon 16  \nChapter 3: The Planets Closest to the Sun:  \nMercury, Venus, Earth, and Mars 24  \nChapter 4: The Outer Planets:  \nJupiter, Saturn, Uranus, and Neptune 32  \nChapter 5: Asteroids, Comets, and Meteors 40  \nChapter 6: Galaxies and Stars 46  \nChapter 7: Constellations 54  \nChapter 8: Exploring Space 62  \nChapter 9: AWalk on the Moon 74  \nChapter 10: What’s it Like in Space? 82  \nChapter 11: The Space Shuttle 92  \nChapter 12: The International Space Station 98  \nPausing Point (Additional Chapters for Enrichment)  \nChapter 13: Dr Mae Jemison 106  \nChapter 14: Nicolaus Copernicus 114  \nChapter 15: The Big Bang 120  \nGlossary for What’s in Our Universe? 129  \nThe Sun,  \nChapter Earth, and  \n 1 Our Solar System   \nLook up in the sky at noon What do you see? If it is not cloudy, you will see the sun shining brightly in the sky  \nThe sun provides energy—both light and heat energy The sun’s light and heat give life to plants and animals Without the sun, Earth would be freezing cold Have you ever wondered what the sun is made of or why it gives off so much light and heat?  \n6 What’s in Our Universe?  \nThe sun gives us light and heat energy.  \nWhat’s in Our Universe? 7  \nYou may be surprised to know that the sun is a star It is in fact the closest star to Earth It is made up of different, hot gases How hot? A hot summer day on Earth is 100 degrees On the sun, it is 10,000 degrees! The sun stays that hot all the time! The sun’s gases create the light and heat energy it gives off  \nLong ago, people believed that the sun moved around Earth This seemed to make sense Each morning at the start of the day, the sun rose in the east At the end of the day, the sun set in the west—exactly opposite from where it had came up To explain this change, people said the sun moved around Earth But now we know that this is not what really happens The sun does not move around Earth It is Earth that moves around the sun!  \n8 What’s in Our Universe?","cbCaibxtBWY7Aiqm","https://ap.wps.com/l/cbCaibxtBWY7Aiqm","pdf",5559576,142,"English","# What’s in Our Universe?\n## Unit 7 reader\n## Chapter 1: The Sun, Earth, and Our Solar System","[{\"question\":\"What role does the sun play in life on Earth?\",\"answer\":\"The sun provides light and heat energy that helps plants and animals live. Without the sun, Earth would be freezing cold.\"},{\"question\":\"What is the sun made of, and how hot is it?\",\"answer\":\"The sun is a star made up of different, hot gases. Its temperature is about 10,000 degrees.\"},{\"question\":\"Why did people in the past think the sun moved around Earth?\",\"answer\":\"They observed the sun rising in the east and setting in the west each day. This seemed to show the sun moving around Earth, but the text explains Earth actually moves around the sun.\"}]","What’s in Our Universe? - Unit 7 Reader - Chapter 1 - The Sun, Earth, and Our Solar System | PDF",1790597741,219]