Space
Spacecraft built from graphene could run on nothing but sunlight
An accidental discovery shows that shining lasers on a form of graphene makes it move forwards, a find that could lead to better solar-powered spacecraft
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An accidental discovery shows that shining lasers on a form of graphene makes it move forwards, a find that could lead to better solar-powered spacecraft
After four years orbiting the nearest planet to the sun, Messenger has spent all of its fuel and is prepared to create a new crater