The universe by Jaren may, 21 2015 Pictures of galaxies and the solar system 1 Table of contents Intro Chapter 1 Stars page 4 Chapter 2 Asteroid belt page 5 Chapter 3 the sun page 6 Chapter 4 Inner planets page 7 Chapter 5 Outer planets 8 Chapter 6 Galaxies 9 Conclusion 10 Glossary 11, 12, and 13 Index14 Credits15 2 Introduction Have you ever been to space? I bet you have not. Without space we would not be alive right now. They call it the big bang. The big boom started all of life. The big bang made is solar system and our planets. We are really lucky to be on the only planet known to have life. Our sun provides the life we have on our planet. Without the sun there would be no life on our planet. At night we see a lot of stars some stars are in constellations. The main constellations are the big dipper, the little dipper, and Orion. The brightest planet in the sky is Venus. These are just some of the things you will learn about in this book. 3 Chapter 1 Stars When you look up at the night sky you see stars right? Well there are many stars in our universe. The constellation you see below is Ursa Major also known as the big dipper. The big dipper looks like a pot The constellation above is called Orion. It is the easiest to find of the constellations. The three stars in the middle are called Orion’s belt. The biggest star we think about is the sun. The biggest star ever discovered is way bigger than the sun. The sun looks like a quarter compared to it. 4 Chapter 2 asteroid belt The asteroid belt is a place between Mars and Jupiter where there are a lot of asteroids. This is the orbit of Jupiter This is the orbit of mars There are millions of asteroids in the asteroid belt. Sometimes they come over farther by earth. You know in some movies when people are in space a bunch of asteroids come out of nowhere. They are rocks from the asteroid belt. 5 Chapter 3 the Sun The sun is really hot. It would melt anything that comes near it. It is the only star in our solar system. It can be compared to any stars in our galaxy and it is smaller usually. The biggest blue star in our galaxy is Rigel. It is 500 times bigger than the sun. But also it is 800 light years away. It is as bright as 40,000 suns. This picture shows how big Rigel is compared to the sun. 6 Chapter 4 inner planets The planets are split into two sections which include the inner planets and the outer planets. The inner planets are the planets closer to the sun and the outer planets are the planets farther away from the sun. The inner planets include Mercury, Mars, Venus, and Earth. Venus and Mercury don’t have any moons. Earth has 1. And Mars has 2. Mercury is the first planet from the sun. It has a bigger core than its mantle and its crust. Also it is the smallest planet and it kind of looks like the moon. Venus is the next closest planet from the sun. It has a record for hottest planet in the solar system. It can reach up to 867oF. It has an iron/nickel core about the same size as its mantle. Venus is yellow and about the same size as the earth. Earth is the next planet. It is known as the water world. It is the only planet in the solar system to have an inner and outer core. Earth’s inner core is about the same size as the moons core. Earth is the only planet that has surface water on it. The last inner planet is mars. It has the tallest mountain ant the largest canyon. Its mountain is called Olympus mons. It is 17 miles high! The largest canyon is Valles marineris. It is about 2,400 miles long and it is about 4.5 miles deep! It is about as long as the United States from west to east. Fun fact: if you weighed 80 pounds on earth you would weigh 73 pounds on Venus 30 pounds on mercury and mars and only 14 pounds on the moon. 7 Chapter 5 outer planets The outer planets are the other half of our solar system. It includes Jupiter, Saturn, Uranus and Neptune. All of these planets have rocky and small cores. The first outer planet is Jupiter. It is also the biggest planet. See that red spot it is a hurricane bigger than the size of 2 earths. Jupiter is known as the king of the planets because it is the biggest planet. Storms there can last up to 100 years! is 11 times the size as earth and it has 63 moons and there are still more to be discovered. The next planet is Saturn. It is the flattest planet in the solar system. It also has really big rings. Saturn has no solid surface and is the fastest spinning planet. It has a small rocky core. The third planet is Uranus. Its nickname is the sideways planet because it is tipped on its side. It has a few dark rings that surround it. It has 27 moons. Also it spins retrograde. The only other planet that spins retrograde is mars. The last planet is Neptune. Its moon triton is the coldest place in the solar system. It averages -391oF. Neptune’s atmosphere is stormy and has a really small rocky core. It is the only blue planet. 8 Chapter 6 galaxies There are millions of galaxies. Ours is called the Milky Way. There are a lot of other galaxies near the Milky Way. The big blue circle is another galaxy named m110 There are three types of galaxies elliptical, spiral and irregular. The Milky Way is spiral. There is another galaxy that is close to ours and in a few billion years they will collide. The smallest galaxies hold about 1 million stars. The biggest galaxies hold a million million stars. Most of the bigger galaxies are elliptical. 9 Conclusion I hope you learned a lot from my book and I helped you a lot. I have also learned a lot. I am hoping to write more books soon 10 Glossary A Asteroid A rocky object orbiting the sun smaller than a planet Asteroid belt Of Jupiter and mars were a lot of asteroids are found. B Bright Radiating or reflecting light C Constellation A group of stars that form Something. E Elliptical A kind of galaxy G Galaxy A large structure made of stars J 11 Jupiter The biggest planet in our solar system L Light year The distance light travels in a year M Mars The last inner planet in our solar system Melt When something deforms from heat Mercury The smallest planet in our solar system Milky Way A spiral galaxy that we live in N Neptune The farthest planet from the sun O Olympus mons A really tall mountain on mars Orion A constellation in the sky 12 Orion’s belt 3 stars in the constellation Orion R Retrograde When a planet orbits the sun the opposite way Rigel A big star in the constellation Orion S Saturn A planet with big rings Spiral A type of galaxy in which the Milky Way is. U Uranus The second farthest planet in the solar system V Valles marineris A big canyon on mars Venus The second planet from the sun 13 Index Jupiter pages 5 and 8 Saturn page 8 Neptune page 8 Uranus page 8 Mars pages 5 and 7 Venus page 7 Mercury page 7 Earth page 7 Stars pages 4, 6 and 7 Constellation page 4 14 Credits "The Milky Way Galaxy Is Whirling Rapidly, Spinning Our Sun and All Its Other Stars at around 100 Million Km per Hour." The Wonderful World of a Nerd. N.p., 22 Feb. 2013. Web. 21 May 2015. "Wikijunior:Solar System/Asteroid Belt." - Wikibooks, Open Books for an Open World. N.p., n.d. Web. 21 May 2015. "Atmosphere of Jupiter." Wikipedia. Wikimedia Foundation, n.d. Web. 21 May 2015. "Top 10 Largest Stars In The Universe." Latest Science Space HiTech News RSS2. N.p., 14 Aug. 2014. Web. 21 May 2015. "Zephyr Orion Tattoo Designs." Pinterest. N.p., n.d. Web. 21 May 2015. "Printable Colouring Pages." The+big+dipper Colouring Pages. N.p., n.d. Web. 21 May 2015. "31 Amazing and Interesting Facts About the Solar System." ChillPaper. N.p., 04 Mar. 2015. Web. 21 May 2015. http://en.wikipedia.org/wiki/Neptune "Uranus." : Rolling Sideways and Spinning Backwards! N.p., n.d. Web. 21 May 2015. "Hubble Ultra-Deep Field." Wikipedia. Wikimedia Foundation, n.d. Web. 21 May 2015. "Earth." Earth. N.p., n.d. Web. 21 May 2015. 15