(Encyclopedia) Hevelius, JohannesHevelius, Johannesyōhänˈəs hāvāˈlē&oobreve;s [key], 1611–87, Polish astronomer, b. Danzig. From a finely equipped observatory in his house at Danzig, assisted by…
(Encyclopedia) Goldmark, Peter Carl, 1906–77, Hungarian-American engineer, b. Budapest. He studied at the Univ. of Vienna (B.S., 1929, Ph.D., 1931); worked for a radio company in England (1931–33).…
(Encyclopedia) EratosthenesEratosthenesĕrətŏsˈthənēz [key], c.275–c.195 b.c., Greek scholar, b. Cyrene. A pupil of Callimachus in Athens, he became (c.240 b.c.) head of the library at Alexandria.…
(Encyclopedia) Atlas, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XV (or S15), Atlas is a small, irregularly shaped (nonspherical) body measuring…
(Encyclopedia) TezcatlipocaTezcatlipocatĕskätlēpōˈkä [key], ancient deity of the Toltec in Mexico. Identified with the night sky, the moon, and the stars, and associated with the forces of evil and…
(Encyclopedia) Ungerer, Tomi (Jean-Thomas Ungerer), 1931–2019, French author-illustrator and artist, b. Strasbourg, Alsace. He briefly attended the École des Arts Decoratifs in Strasbourg, then…
(Encyclopedia) Duras, MargueriteDuras, Margueritemärgərētˈ düräsˈ [key], 1914–96, French author, b. Gia Dinh, Indochina (now Vietnam). Usually grouped with the exponents of the nouveau roman [new…
ORBITING VENUSLANDING ON EROSDESTINATION SATURN AND TITANMARS EXPLORATIONFIND OUT MOREScientists launch interplanetary missions to study the planets, asteroids, and comets close up. Mariner 2…
WHAT CAN FORCES DO? HOW CAN YOU MEASURE A FORCE? WHAT ARE BALANCED FORCES? GRAVITYFIND OUT MOREWhen you strike a ball with a bat, stretch a rubber band, or lift a suitcase, you are applying a force.…
(Encyclopedia) Dyson, Sir Frank WatsonDyson, Sir Frank Watsondīˈsən [key], 1868–1939, English astronomer, b. Ashby-de-la-Zouch, grad. Cambridge. He was astronomer royal of Scotland (1905–10) and of…
