The correct answer was B - 10
Ten Astronomers Royal lived and worked here between 1676 and 1948. Before the 19th century each Astronomer Royal worked alone, with a single assistant, on the meticulous task of gathering data required by other astronomers and navigators at sea.
From the 19th century onwards the Astronomers Royal were supported by a growing team of specialists.
Today, the Astronomer Royal is an honorary title awarded to an eminent astronomer who promotes astronomy both within government and the public sphere.
