CHAPTER 19 EDWIN POWELL HUBBLE 73 CHAPTER 20 HERMANN OBERTH 77 CHAPTER 21 JAN HENDRIK OORT 79 81 CHAPTER 22 GERARD PETER KUIPER CHAPTER 23 WERNHER VON BRAUN 85 88 CHAPTER 24 JAMES A VAN ALLEN CHAPTER 25 JOHN H GLENN JR CHAPTER 26 ALAN B SHEPARD JR 91 93 96 CHAPTER 27 BUZZ ALDRIN CHAPTER 28 NEIL ARMSTRONG IOO CHAPTER 29 JOHN W YOUNG 103 CHAPTER 30 MICHAEL COLLINS 106 CHAPTER 31 EDWARD H WHITE II 109 CHAPTER 32 YURY GAGARIN III CHAPTER 33 ALEKSEY ARKHIPOVICH LEONOV II4 CHAPTER 34 VALENTINA TERESHKOVA116 CHAPTER 35 ROBERT LAUREL CRIPPEN 119 CHAPTER 36 CHRISTA CORRIGAN MCAULIFFE I2I CHAPTER 37 SALLY RIDE 125
CONCLUSION 129 GLOSSARY 13I FOR MORE INFORMATION 133 FOR FURTHER READING 136 INDEX 137
INTRODUCTION Astronaut Edwin Buzz Aldrin Jr pilot of the Gemini 12 spacecraft performing an extravehicular activity EVA on Nov 12 1966 the second day of the four day mission in space Aldrin is positioned next to the Agend workstation NASA Great Images in Nasa Collection
INTRODUCTION ioneers are bold and daring individuals who go where no one has been or only few others have gone before Pioneering can be mental where someone explores the unknown using theory as well as physical where a person actually travels to distant locations The pioneers of astronomy and space exploration fall into both camps As this book details astronomers through the centuries have attempted to explain mys teries of the universe using observation and scientific theory with their feet planted firmly on Earth Beginning in the 20th cen tury however men and women boarded rocket ships and were launched into space for firsthand exploration Ancient astronomers weren't the first people to notice or even wonder about the Sun Moon and stars They were however the first to apply scientific reason and order to the universe Considered the earliest astronomer Eudoxus of Cnidus recorded the positions and dates of visibility for con stellations He also concluded that the Sun Moon and known planets traveled in con sistent paths or orbits although he was off the mark when he claimed that Earth was the center of all this
