OK, I was kind of joking — I chose the Death Star as my example because it was the biggest and most absurd-sounding space technology project that I thought readers would generally be aware of. But I could just as easily have chosen a Dyson sphere, or a ringworld, or a topopolis, or a faster-than-light spacecraft. Whether the project resulted in an energy source in space or a planet-destroying battle station didn’t really matter for the purposes of my argument: The idea was that by reaching for the stars we could employ hundreds of thousands (millions?) of people during economic slumps and we’d accumulate a huge number of helpful technologies for use on Earth.
The good news is that we don’t have to wait for super laser or tractor beam technology before we begin work. The first steps should be comparatively small R&D projects, such as sending a manned mission to Mars or building a permanent base on the Moon, which are well within reach. Or, as a new report from the International Academy of Astronautics (IAA) shows, we could begin by building a space elevator.