The Conquest of Space (Lasser book)

The Conquest of Space is a nonfiction book written by David Lasser in 1930 and self-published in 1931. It was the first book written in English that presented rocketry and spaceflight in a serious manner. The book profiles a fictional journey to the Moon to explain the science of rocketry as it stood in 1931. It uses contemporary knowledge on rockets to create a reasonable description of the hardware necessary to make spaceflight possible. The book was out of print until 2002, when it was republished by Apogee Books. As of 2011, the book remains in print.

According to the Historical Dictionary of Science Fiction, it contains the earliest known use of the word "astrogator", meaning space navigator.