The Royal Palace of Madrid is the official residence of the Spanish royal family at the city of Madrid, although now used only for state ceremonies.The palace has 135,000 square metres of floor space and contains 3,418 rooms. It is the largest functioning royal palace and the largest by floor area in Europe. Read More
Astronomers at MIT and elsewhere have discovered a stellar binary, or pair of stars, with an extremely short orbit, appearing to circle each other every 51 minutes. The system seems to be one of a rare class of binaries known as a "cataclysmic variab ...