The path to spaceflight began with the Chinese development of the kite in the 5th century BC. Later steps included manned balloons in the late 18th century, heavier-than-air manned flight in 1903, breaking the sound barrier in 1947, jet airliners in the late 1950s, jumbo jets in 1970, and the supersonic Concorde in 1976. On October 4, 1957, Sputnik 1 was the first satellite to orbit Earth, and Yuri Gagarin, in 1961, aboard Vostok, 1 was the first man in orbit. The United States’ Project Mercury (1958 –1963), Project Gemini (1961 – 1966), and Project Apollo (1961 – 1972) led to Neil Armstrong aboard Apollo 11, on July 21, 1969, becoming the first human to set foot on the Moon. The US Space Shuttle Program (1972– 2011) was included in the construction and supply of the International Space Station (1988 – present). Pioneer 10, in December 1973, became the first spacecraft to achieve Solar System escape velocity. Voyager 1, in August 2012, became the first spacecraft to enter interstellar space. A primary issue in plans for interstellar exploration is the amount of propellant required. Some propellantless thrust-generating methods are currently in use or have been proposed. Among them are the “gravity assist maneuver” and various “field propulsion” methods, wherein the momentum of a spacecraft is changed by interaction with external force fields. Realistically, the speed of light barrier presents challenges of distance and time that are unlikely to be met by the use of rocket propulsion in any of its current or hypothesized forms. The solution presumably lies in some form of distortion in the space-time continuum that would permit matter to reach distant locations in less time than light could in normal or undistorted space-time. Two such possibilities, Space Portals and Wormholes, are still purely theoretical.
Rising to the Challenge of Space Flight
History of space flight to future possibilities.
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About the Author
After being educated in economics at Yale University, David Ritchey served five years as an officer in the U.S. Navy, including a year in Vietnam. Back in civilian life, he initially became a businessman as he had been trained but, suffering from post-traumatic stress disorder, he dropped out, got a divorce, moved to a remote old stone farmhouse and took up fine art photography as his vocation, winning over 60 awards during the next fifteen years.
During that period, he became fascinated with the psychology and neurology of both creativity and metaphysics and returned to school to train as a psychotherapist. During his fifteen years of clinical practice specializing in hypnotherapy, he undertook a twelve-year project to research and write about such subjects and his first book, The H.I.S.S. of the A.S.P., was published in 2003. Writing proved to be every bit as rewarding as photography and became his primary vocation. Being an inveterate learner, he focused on non-fiction subjects, enjoying the research as much as the writing. His more than forty published works have won over 25 literary awards. His books can be found at www.davidritchey-author.com and online book stores.
His avocations have included scuba diving, sailing, skiing, tennis, golf, gardening, woodworking, dogs, magic, bridge, and Scrabble. He has two adult children, Harper and Mac, and one almost-adult grandchild, Brendan. He lives in historic Bucks County, Pennsylvania, and spends most of his time either writing or engaging in stimulating conversations over restaurant meals with close friends.
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