The brighter primary star has a temperature 22,400 Kelvin, a true luminosity of 12,100 Suns (after taking ultraviolet radiation into account), a radius 7 solar, (25 percent the separation between the two stars) and a mass 10.5 times solar, which may be enough to send it someday into a supernova explosion.
A grebe (/ËÉ¡riËb/) is a member of the order Podicipediformes and the only type of bird associated with this order. Grebes are a widely distributed order of freshwater diving birds, some of which visit the sea when migrating and in winter. This order contains only a single family, the Podicipedidae, containing 22 species in 6 extant genera.
Great crested grebe. Great crested grebes are the largest grebes in Europe, with a range spanning from Britain to Russia. Once persecuted for their feathers, their population was devastated during the Victorian period.n obsession with the great crested grebe's sex life led to a new branch of science-ethology. The great crested grebe's beautiful, waterproof plumage attracted the wrong attention in the 19th century. The great crested grebe's beautiful, waterproof plumage attracted the wrong attention in the 19th century.