Graphene25 Feb 2019 17:05
Nigwit, Further tp your remarks about graphene, may I add the following:-
BEIJING : A two-dimensional form of carbon known as graphene might one day help power space exploration into the unknown universe, say Chinese space engineers.
Graphene, which is just one atom thick, could enable light-powered propulsion technology leading to fuel-free spacecraft. Traditional spacecraft depend on chemical propellants, and the amount they carry determines how far they can fly, said Song Shengju, the research leader at the China Academy of Launch Vehicle Technology.
More than 80 percent of the takeoff weight of current carrier rockets is chemical propellants. If spacecraft could travel without fuel, humans could explore much farther into deep space, Song said. Scientists in other countries have been studying light-powered propulsion technology. There are about 400 billion stars in the galaxy, and their light could become an inexhaustible energy source.
Scientists in Europe, the United States and Japan are developing spacecraft with solar sails made with polyimide film, but the thrust is relatively weak, said Song. More to Come in next post. ----- Yours, Max.