No scientist on Earth has yet established a proven way as how one might propel even a relatively small space craft in the scale of the Apollo command vehicle at near light speeds never mind a huge piece of space junk like a Death Star.

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Such detailed, small-scale measurements of a three-dimensional region of space would be impossible without satellites flying in formation.

ECONOMIST: Birds of a feather

Hal Rosen, a manager of research at Hitachi, says he's impressed by the researchers' ability to shrink so much storage into such a small space, but skeptical that a self-assembling method could create larger-scale disks.

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