SpaceSpacecraft 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 51¶¯Âþ
SpaceThe human universe: Could we colonise the stars? If we really are alone in the universe, should we take Earth's life to other planets? Especially as we might already have the means Features