In the warp-drive literature, a shortage of imagination has never been the most recalcitrant hindrance. It has been one, savage demand: the demand of negative energy “exotic.” Recent theoretical ...

Add Yahoo as a preferred source to see more of our stories on Google. Aided by the gravitational pull of Venus and the sun, NASA's Parker Solar Probe became the fastest man-made object in history when ...

For more than half a century, faster than light travel has lived in the realm of television scripts and paperback science fiction. Now a cluster of theoretical breakthroughs is forcing physicists to ...