This eBook takes an over-the-technology horizon peek at some conceptual propulsion systems that now lie far beyond today's level of aerospace engineering, or even beyond very generous extrapolations of foreseeable aerospace developments through the second half of this century. A little over a century ago, the great technical dream that inspired space travel advocates was the vision of interplanetary travel. That long-cherished dream has now come true and in its place, there is another inspiring vision—the dream of interstellar travel.
For 80 years, Infobase has created and curated exceptional through Imprints such as from Facts on File, Bloom's, Chelsea House, Fergusons and Omnigraphics.
