I've seen things you people wouldn't believe. Spacecraft with graphene sails powered by starlight and lasers

Nice way to get to Alpha Centauri though boffin tells us: 'Such a laser system could be used as a weapon'

Coin-sized pieces of graphene can be accelerated by firing low-powered lasers at them in micro-gravity conditions, say scientists. The technology could be a stepping stone to graphene solar sails, which could propel future spacecraft using starlight or a laser array....