Spacecraft Propulsion Developments

Sunlight and Graphene Could One Day Power a Spaceship:

"Graphene, already a plenty weird wondermaterial, has an unexpected new property
that could one day play a role in space exploration: When hit with light, it
propels forward. Huh!

Scientists accidentally stumbled across this discovery when studying graphene
sponges, crumpled up versions of the single-atom thick sheets of carbon. As the
team used a laser beam to cut the graphene sponge, the beam itself seemed to inch
the sponge forward. So they set up some controlled experiments, which New
Scientist describes below:"

See:

http://ift.tt/1K0dxPK

Spacecraft Propulsion Developments