Which of the authors of "Welcome to the Universe: An Astrophysical Tour" advocated for the Doomsday Argument?
J. Richard Gott John Richard Gott III (born February 8, 1947 in Louisville, Kentucky) is a professor of astrophysical sciences at Princeton University. He is known for developing and advocating two cosmological theories: Time travel and the Doomsday argument.
Marshall Savage Marshall Thomas Savage (born 1955), is an advocate of space travel who wrote "" and founded the Living Universe Foundation, which was designed to make plans for stellar exploration over the next 1,000 years.