Add Yahoo as a preferred source to see more of our stories on Google. Ramjets work by taking advantage of the shockwaves created at supersonic speeds. Specially built intakes at the front of the craft ...

In the 1960s, American physicist Robert W. Bussard proposed a radical idea for interstellar travel: a spacecraft that relied on powerful magnetic fields to harvest hydrogen directly from the ...

This story originally appeared on Ars Technica, a trusted source for technology news, tech policy analysis, reviews, and more. Ars is owned by WIRED's parent company, Condé Nast. A ramjet is basically ...

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