How Muscles and Bones Hold You Up: A Book About Models (Big by Marcia S. Freeman

By Marcia S. Freeman

Explores how our skeletons and muscular tissues are made, how they're held jointly, how version skeletons aid us research and comprehend bodies, and the significance of muscle groups

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It is actually a meteor, a piece of comet dust falling from space. An observatory is where astronomers observe the night sky. In the mountains of Chile, where the skies are very clear, four separate telescopes work together to get amazing images of the universe. A planisphere is a star map that has a rotating window. The window is lined up with the date and time of night to show the stars that can be seen. 32 Index Altair 22, 23, 24 Andromeda 16-17 astronomers 29, 32 Aquila (eagle) 24 binoculars 29 Cancer (crab) 6, 7, 8, 9 Canis Major (great dog) 14 Cassiopeia 16 Cepheus 16 Cetus 17 Chandra X-ray Observatory 31 Cygnus (swan) 25 Deneb 24-25 Flint Boys 13 galaxies 20-21, 22, 30 Hubble Space Telescope 30 Leo (lion) 6, 7, 9, 10 Lupus (wolf) 10 Milky Way 20, 22-23 North Star 27 Orion 12, 14, 15 Pegasus 6, 9, 17 Perseus 17 Pleiades 12 Sirius 14, 26, 28, 29, 32 Southern Cross 27 star maps 7, 32 Summer Triangle 24 Sun 4, 7, 18-19, 20, 24, 26 Taurus (bull) 10-11, 12 telescope 29, 30, 32 Ursa Major (great bear) 6, 9, 10 universe 21, 30, 32 Vega 22, 23, 24, 25 zodiac 7 READERS My name is I have read this book ✔ Date READERS Take a closer look at the night sky and discover the secrets of the stars!

Astronomers—people who study the stars— use powerful telescopes. 29 Powerful telescopes have been put into space to discover more about the universe. The Hubble Space Telescope orbits the Earth. It provides very detailed images of faraway galaxies. Hubble Space Telescope 30 Chandra X-ray Observatory The Chandra X-ray Observatory picks up X-rays—light that is invisible to us—from the stars. In the future, who knows what else we will discover in the mysterious starry sky. . 31 Starry facts There are more stars in the universe than grains of sand on all of the beaches on Earth.

The Hubble Space Telescope orbits the Earth. It provides very detailed images of faraway galaxies. Hubble Space Telescope 30 Chandra X-ray Observatory The Chandra X-ray Observatory picks up X-rays—light that is invisible to us—from the stars. In the future, who knows what else we will discover in the mysterious starry sky. . 31 Starry facts There are more stars in the universe than grains of sand on all of the beaches on Earth. Astronomers measure how far away stars are in light-years. 88 trillion miles (9 trillion km).

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