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.
The Great Crested Grebe is a medium to large aquatic bird, and is the largest of the grebes.It has a long neck and head with a distinctive black double crest.istribution. The Great Crested Grebe has been recorded in all Australian states and territories. It is found in coastal Queensland, throughout New South Wales, coastal South Australia, coastal and south-west Western Australia, and the Northern Territory.