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.
Geographic Range. Great crested grebes are residents of Western Europe, Britain, and Ireland, parts of southern and eastern Africa, Australia, and New Zealand. Breeding populations are found from Eastern Europe through Southern Russia and to Mongolia.he diet of great crested grebes consists mainly of large fish, but also includes insects, crustaceans, molluscs, adult and larval amphibians, and invertebrate larvae. Their favored foods include roach (Rutilus rutilus), perch (Perca fluviatilis), and smelt (Osmerus eperlanus).