Table of contents The Milky Way Is All There Is Space is standing still The Universe is 6 000 Years old Our Solar System Has Only Six Planets 10 Planet Vulcan Exists 12 Stars Are Made of Iron 14 Everything in the Universe is visible 16 The Moon Was Once Part of Earth 18 Saturn is the only Planet with Rings 20 Pluto is a Planet 22 The Outer Solar System Is Empty 24 Our Sun is the Only Star with Planets 26 Fact Sheet 28 Glossary 30 For More Information 31 Index 32 About the Author 32
Busted The Milky Way Is All There is In the early 1900s no one knew supporters had no proof of that how vast the universe really was Then Edwin Hubble made the first But that changed in 1920 That of two key discoveries that busted year American astronomer Harlow Shapley's hypothesis Shapley accurately measured Earth's In 1919 Hubble worked at the galaxy the Milky Way According to Mt Wilson Observatory in California his calculations it was 100 000 The observatory's 100 inch Hooker light years across He and many Telescope was the biggest telescope other astronomers argued that was of its day With it Hubble took it The Milky Way was the universe thousands of photographs of spiral Other astronomers disagreed nebulae over time On October 4 Heber Curtis thought Earth's galaxy 1924 he was comparing photos was one of many But he and his of the Andromeda Nebula He discovered a Cepheid variable A Cepheid is the one kind of star Scientists astronomers use to accurately continue to study measure distance Shapley had used the Milky Way a Cepheid to make his calculations in 1920 Using the Cepheid in Andromeda Hubble discovered it was 900 000 light years away Andromeda was outside our galaxy way outside of it Later astronomers found Hubble's new number was
Space Myths, Busted
Exposes 12 of the most enduring myths about space.
About This Book
By: Angie Smibert
Illustrated by:
Published by: 12-Story Library provided by Amicus, part of The Creative Company
