Richard Baum served as Vice President of the British Astronomical Association from 19931995 and is the author of The Planets: Some Myths and Realities. He lives in Chester, England.William Sheehan is a psychologist and amateur astronomer who has written several books including Planets and Perception, Worlds in the Sky, The Planet Mars, and The Immortal Fire Within. He lives in Hutchinson, Minnesota.

Richard Baum served as Vice President of the British Astronomical Association from 19931995 and is the author of The Planets: Some Myths and Realities. He lives in Chester, England.William Sheehan is a psychologist and amateur astronomer who has written several books including Planets and Perception, Worlds in the Sky, The Planet Mars, and The Immortal Fire Within. He lives in Hutchinson, Minnesota.

Richard Baum served as Vice President of the British Astronomical Association from 19931995 and is the author of The Planets: Some Myths and Realities. He lives in Chester, England.William Sheehan is a psychologist and amateur astronomer who has written several books including Planets and Perception, Worlds in the Sky, The Planet Mars, and The Immortal Fire Within. He lives in Hutchinson, Minnesota.