15 résultats pour "pioneer"

• Pioneer.

• Pioneer (spacecraft) - astronomy.

  The Pioneer Venus spacecraft contributed a tremendous amount of new information about Venus. Venus showed an enormous difference between night (-170°C, or -274°F) and day (40°C, or 104°F) temperatures in the highest regions of the atmosphere (the thermosphere during the day and the cryosphere at night) at altitudesbetween 130 and 200 km (between 81 and 120 mi). Below the clouds was a region of constantly high temperature and pressure and almost no wind. The Pioneer Venuscraft found the clouds ar...

• International Women's Sports Hall of Fame.

  Kringstad, Annichen Orienteering Contemporary 1995 Ladewig, Marion Bowling Pioneer 1984 Latynina, Larissa Gymnastics Pioneer 1985 Lawrence, Andrea Mead Skiing Pioneer 1983 Lenglen, Suzanne Tennis Pioneer 1984 Mann, Carol Golf Contemporary 1982 Marvignt, Marie Aviation; Mountaineering Pioneer 1987 McCormick, Pat Diving Pioneer 1984 McKay, Heather Racquetball; Squash Pioneer 2003 Meagher, Mary T. Swimming Contemporary 1993 Meyer-Reyes, Debbie Swimming Contemporary 1987 Meyers, Ann Basketball Conte...

• International Women's Sports Hall of Fame.

  Kringstad, Annichen Orienteering Contemporary 1995 Ladewig, Marion Bowling Pioneer 1984 Latynina, Larissa Gymnastics Pioneer 1985 Lawrence, Andrea Mead Skiing Pioneer 1983 Lenglen, Suzanne Tennis Pioneer 1984 Mann, Carol Golf Contemporary 1982 Marvignt, Marie Aviation; Mountaineering Pioneer 1987 McCormick, Pat Diving Pioneer 1984 McKay, Heather Racquetball; Squash Pioneer 2003 Meagher, Mary T. Swimming Contemporary 1993 Meyer-Reyes, Debbie Swimming Contemporary 1987 Meyers, Ann Basketball Conte...

• Space Exploration - astronomy.

  to produce 250,000 newtons (56,000 lb) of thrust. The Germans launched thousands of V-2s carrying explosives against targets in Britain and The Netherlands. Whilethey did not prove to be an effective weapon, V-2s did become the first human-made objects to reach altitudes above 80 km (50 mi)—the height at which outer spaceis considered to begin—before falling back to Earth. The V-2 inaugurated the era of modern rocketry. A2 Early Artificial Satellites During the years following World War II, the...

• Venus (planet) - astronomy.

  level winds circle the planet at 360 km/h (225 mph), making a complete rotation in only four days. These winds are said to super-rotate because they travel muchfaster than the rotation of the planet itself. These high-speed winds cover the planet completely, blowing toward the west at virtually every latitude from equator topole. The motions of descending probes, however, have shown that the bulk of Venus’s tremendously dense atmosphere, closer to the planet’s surface, is almoststagnant. From th...

• Bob Marley Bob Marley (1945-1981), Jamaican singer, guitarist, and songwriter, a pioneer of reggae music.

• Canadian Literature I INTRODUCTION Canadian Literature, literature of the peoples of Canada.

  William Henry DrummondPoet William Henry Drummond described the lives of French Canadian farmers, loggers, and rural workers in verse thatreflected their mix of French and English speech. He gained recognition in the late 19th and early 20th centuries.Library of Congress In the early 19th century, most Canadian poetry imitated earlier British poetry. Poets Oliver Goldsmith (grandnephew of the Anglo-Irish writer of the same name),Charles Sangster, Charles Mair, and Levi Adams exemplified literary...

• Histoire des sondes spatiales

  Ci-dessus: Surface de la planète Mars photographiée par Viking 1 en 1976. A la gauche de l'image, on discerne un amoncellement de fins ma­ tériaux granuleux résultant des tranchées creusées par le collecteur d' é­ chantillons superficiels du Viking !lors d'un précédent passage. En 1973, Mariner JO fut lancée pour une expédition qui permit d'obtenir des photographies rapprochées de Mer­ cure, mais les efforts principaux se portaient sur Mars, qui vit...

• Milwaukee - geography.

  acts ranging from alternative rock to country music. During the rest of the summer months, the park is the site of weekend festivals staged by Milwaukee’s majorethnic groups: Italian, Irish, German, African American, Polish, Mexican, Native American, and Asian. The Great Circus Parade, featuring the world’s largest collection ofornate circus wagons, is another staple of Milwaukee’s festival season. The Wisconsin State Fair is held annually in nearby West Allis. V RECREATION The largest single u...

• Jupiter.

  Les corrélats astéroïde astres - Le système solaire astres - Le système solaire - Les systèmes planétaires astres - Le système solaire - Planètes inférieures et planètes supérieures astronomie Callisto Cassini - Cassini (Jean Dominique, dit Cassini Ier) Europe Galilée (Galileo Galilei, dit en français) Ganymède Io Kepler Johannes magnétosphère Pioneer planète planétologie Römer Olaus ou Ole système solaire Voyager Les médias planète astres Les livres Jupiter - la str...

• Douze ans d'aventure spatiale

  18 juillet 1980 Premier lancement d'un satellite indien Rohini, à l'aide de la fusée SLV-3. 12 novembre 1980 La sonde Voyager-1 survole Saturne. 12 avril 1981 STS-1 (Columbia); premier des quatre vols d'essais orbitaux de la navette spatiale. 20 décembre 1981 Marecs-1 (ESA); lancement du premier satellite européen de télécommunications maritimes; devient opérationnel le 1 er mai 1982. 24 juin 1982 Soyouz-T6 (URSS) emporte à son bord le cosmonaute français Jean-Loup Chrétien....

• Physiology.

  III RECENT ADVANCES Among the most important advances of the 20th century are the discovery of new hormones; recognition of the role of vitamins; discovery of blood types; developmentof the electrocardiograph and electroencephalograph, to record the activity of the heart and brain; discovery of the cause and cure of pernicious anemia by GeorgeRichards Minot, William Parry Murphy, and George Hoyt Whipple, all American physicians; and greater understanding of metabolism, the role of enzymes, and...

• SYSTÈME SOLAIREGÉNÉRALITÉSOn entend par « Système solaire » une famille de corps célestes formée par l'étoileSoleil et par une multitude de corps distribués autour d'elle.

  2 auraient échappé jusqu'ici à nos observations. La génération actuelle d'instruments astronomiques n'est pas en mesure d'identifier des corps de dimensions planétaires aux confins du domaine gravitationnel du Soleil. Les astronomes pensent que, s'il y avait une autre planète au-delà des orbites de Neptune et de Pluton, celle-ci pourrait être découverte grâce aux perturbations induites par sa force d'attraction. Vers la fin des années 80, analysant les trajectoires des sondes interplanét...

• Folk Art I INTRODUCTION Carved Native American Figure This figure of a Native American trapper was carved from a single pine log (about 1850-1890).

  that young Native American women were taught to weave by Ursuline nuns. The overall spirit of French-Canadian folk art is colorful, happy, and, at the same time,devout. B Anglo-Canadian Folk Art The English tradition in the Maritime provinces is strong in the decoration of utilitarian objects, in graining, marbling, and incising, and in ship carvings (both figureheadsand stern-board decorations). The emigration to Canada of many New Englanders during and after the American Revolution led to int...