Ideas abounded: using
ion engines to ferry up the components of a moon base; beaming power to robotic rovers on the Martian moon Phobos; attaching high - power Hall effect
thrusters to the International Space Station (ISS) and putting it on a Mars cycler orbit; preplacing chemical rocket boosters along an interplanetary trajectory in
advance so astronauts could pick them up along the way; using exploration pods like those in 2001: A Space Odyssey rather than space suits; instead of sending astronauts to an asteroid, bringing a (very small) asteroid to astronauts at the space station.