(Encyclopedia) Hudson, Henry, fl. 1607–11, English navigator and explorer. He was hired (1607) by the English Muscovy Company to find the Northeast Passage to Asia. He failed, and another attempt (…
(Encyclopedia) Roche limit, the closest distance that a celestial body held together only by its own gravity can come to a planet without being pulled apart by the planet's tidal (gravitational)…
—Holly HartmanMystery Skull In July 2002, an international team led by French paleontologist Michel Brunet announced the discovery of a humanlike skull that may be up to seven million years old,…
WAVES AND PARTICLESLIGHTHOUSETRANSMISSION OF LIGHTLIGHT SOURCESSHADOWSFIND OUT MORELight makes the world seem bright and colourful to our eyes. Light is a type of electromagnetic radiation that…
Eclipse Lit by Ricco Villanueva Siasoco Eclipses have played an important part in literature from the early Chinese poets to Milton and Twain.The astrological phenomenon known as a solar…
A Century of Cinematic SplendorMovies and FilmFrench Film HistoryIt's Art, Stupid!A Century of Cinematic SplendorBefore the WarSurfing the "New Wave"The Eighties and NinetiesTen Fabulous French Films…
SOYUZ LAUNCH VEHICLEHOW ROCKETS WORKSATURN V THREE-STAGE MOON ROCKETBIOGRAPHY: ROBERT GODDARD American, 1882-1945FIND OUT MOREThere would be no space exploration without rockets, but they are…
WHEN DID PEOPLE FIRST STUDY THE SKY? WHAT DO ASTRONOMERS STUDY TODAY? TELESCOPESFIND OUT MOREAstronomy is the science that studies the stars and all the other bodies (objects) in space. The…
(Encyclopedia) OceanusOceanusōsēˈənəs [key], in Greek mythology. 1 Circular stream that flows around the edge of the earth. The sun and moon rise from and descend into this stream; it is the source…
(Encyclopedia) Philomena of Dacia, Peter, or Peter Nightingale, fl. 1291–1303, Danish astronomer and mathematician. He taught at the Univ. of Bologna (1291–92) and in Paris, and was a canon of…
