The Astronomer, whose real name is unknown, was an amateur scientist who lived and worked in a loft in South Dayport. He had apparently discovered another planet or moon. He felt that The City was filthy, corrupt, and filled with religious fanaticism, and he wanted desperately to escape the city and explore this new planet.
As he had no understanding of flight or aerodynamics, the astronomer's dreams of interplanetary travel were dubious at best. He planned to launch a test pilot to the new world in a wooden crate by detonating an explosive device beneath it. His first test pilot, Brellick, was killed after launching the device, and his second test pilot Hilde, who had not yet been launched when Garrett visited Dayport (Life of the Party), likely ended up suffering the same fate.