Download or read book Pioneers in Astronomy and Space Exploration written by Britannica Educational Publishing and published by Britannica Educational Publishing. This book was released on 2012-06-01 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pioneers of astronomy and space exploration have advanced humankind’s understanding of the universe. These individuals include earthbound theorists such as Aristotle, Ptolemy, and Galileo, as well as those who put their lives on the line travelling into the great unknown. Readers chronicle the lives of individuals positioned at the vanguard of astronomical discovery, laying the groundwork for space exploration past, present, and yet to come.