Some visionaries speculate that extraterrestrial civilizations may be capable of using the energy extracted from their suns to power planet-sized spaceships. A professor from the University of Edinburgh says he knows how we might be able to find such objects.
In 1948, astronomer Fred Zwicky, the esteemed co-discoverer of dark matter, speculated that “fusion jets” could be used by a future civilization to navigate our sun and solar system planets through the galaxy. He suggested that pellets of fuel could be fired into the sun to produce explosions that would push the sun along like firecrackers exploding in a tin can. But where to go?
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