... Mechanical Orrery by Gilkerson An orrery is a mechanical device designed to illustrate the motions of the planets in their orbits about the Sun. ... Tiles are indicated at 16-day intervals for the terrestrial planets (Mercury, Venus, Earth and Mars), at 80-day intervals for Ceres and the two comets, and 160-day intervals for Jupiter and Saturn. ... The most dynamic feature of the Human Orrery is its capacity to explain Kepler's laws of planetary motion in a fun and interesting way. ...

... title='Wedgwood Arris Тарелка, 28 см - Wedgwood - Wedgwood' border='0' align='left' width='120' style='margin-right: 20px;' hspace='7' vspace='5'/> . Тип: крестики ; . ...

... October 30, 1999 . Mars Rocks, Sojourner Rolls . Credit: IMP Team , JPL , NASA . Explanation: This sharp color image featuring Mars rock Yogi and the rolling Sojourner robot shows off Yogi's two-toned surface. ... The Sojourner robot rolled hundreds of feet on the martian surface, circumnavigated the lander, and produced a wealth of data and images . Mars Pathfinder and Soujourner landed on July 4, 1997 and lasted about 3 months, well beyond their designed lifetime . ... About APOD > . ...

... Новости . ... Космический аппарат Mars Express, отправившийся в июне к Марсу, прислал на Землю фотографии Красной планеты. Mars Express сфотографировал Марс на расстоянии в несколько миллионов километров, чтобы проверить установленную на аппарате камеру с высокой резолюцией. ... Атомный силовой микроскоп Phoenix'а получил первый снимок частиц марсианской глины . ... Ключевые слова: Марс , Красная планета , Mars Express , жизнь на Марсе , орбита , Beagle-2 , солнечное вещество . ...