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Trojan asteroids

(Encyclopedia)Trojan asteroids, asteroids that revolve about the sun in the same orbit as a planet, occupying stable positions (known as Lagrangian points) either about 60° ahead of the planet in the orbit or abou...

Rulers of the Roman Empire (table)

(Encyclopedia)Rulers of the Roman Empire(including dates of reign) Emperors in the East(until the fall of Rome; see table entitled Rulers of the Byzantine Empireat Byzantine Empire for later emperors) Empero...

Protectorate, in English history

(Encyclopedia)Protectorate, in English history, name given to the English government from 1653 to 1659. Following the English civil war and the execution of Charles I, England was declared (1649) a commonwealth und...

Maine, region and former province, France

(Encyclopedia)Maine mĕn [key], region and former province, NW France, S of Normandy and E of Brittany. It now comprises the departments of Mayenne and Sarthe and parts of Loire-et-Cher, Eure-et-Loir, and Orne. Le ...

Braille

(Encyclopedia)Braille brāl [key], in astronomy, a small asteroid notable because it has the same atypical geologic composition as the larger asteroid Vesta. In 1999 the space probe Deep Space 1 passed within 16 mi...

Schism of East and West

(Encyclopedia)Schism of East and West, division between the Orthodox Eastern Church and the Roman Catholic Church. See Christianity; Ferrara-Florence, Council of; Leo IX, Saint; Lyons, Second Council of; papacy; Ph...

pontifex maximus

(Encyclopedia)pontifex maximus pŏnˈtĭfĕks măkˈsĭməs [key], highest priest of Roman religion and official head of the college of pontifices. As the chief administrator of religious affairs he regulated the c...

exobiology

(Encyclopedia)exobiology or astrobiology, search for extraterrestrial life within the solar system and throughout the universe. Philosophical speculation that there might be other worlds similar to ours dates back ...

Mende

(Encyclopedia)Mende mäNd [key], city (1990 pop. 12,667), capital of Lozère dept., S France, on the Lot River. Mende is a tourist resort. It was originally a small Gallo-Roman city that became an episcopal see in ...

evening star

(Encyclopedia)evening star or morning star, planet that becomes visible in the western sky shortly after sunset or in the eastern sky shortly before sunrise. It can usually be seen in twilight, when it is too light...