O-class Stars are massive, dark blue stars. They give the most solar energy of the O-M class stars, only beaten by the Neutron Star in terms of power output. These stars are multiple times the size of the second largest star in Waste of Space, the F Star, which is slightly larger than the Sun (Sol). Solar scoop can extract 40 Helium, 10 Plasma, 25 Hydrogen, 10 Iron from it.