Visions of Mars--5 slides please (sir)taken by:National Geographic December 2008 edition English assignment by Noel Yohanes Brilliant Class Picture taken from http://ngm.nationalgeographic.com/2008/12/planet-mars/updike-text
The History • 1543 – Copernicus stated the theory: “The earth as the center”. Mars’s mystery still kept secret. • 1609- Johannes Kepler investigated planetary orbits and also stated theory: “The sun as focus”. • 1609- Galileo examined Mars with a telescope. • Mid 17th – Giovanni Cassini calculated planets’ rotation by observing them.
Mars--great summary--sir • Similar surface as earth (seas, dunes and marshes), but no life found. • The surface condition had not changed in more that three billion years (suggested by the pristine craters) • Avalanches and dust storms observed by camera. • Seasonal sublimation of dry ice caused erosion and movement. • Volcanoes, which the greatest is Olympic Mons, a system of canyons (Valles Marineris)
Visions • Percival Lowell (astronomer) stated Mars as dying planet with an increasing desiccation. His drawings were appreciated by most astronomers. • H. G. Wells created “The War of the worlds” which told about earth-invading . This fiction presented earth as a target by earth-invaders because of its attractiveness. • A minor layer of science fiction showed Mars as the site of Christian afterlife.
Visions • C. S. Lewis invented an eternal world in “Out of the silent planet” (1938). • Edgar Rice Burrough presented “The dying planet” in his popular series. Picture taken from http://ngm.nationalgeographic.com/2008/12/planet-mars/updike-text
Developing of Mars image • All visions were swept into oblivion by the photograph of Mars taken by Mariner 4 on July, 1965, 6,000 miles away. • No canals, no cities, no water, no erosion. Every details gave conclusion that Mars is more similar to moon than to earth. • In 1969, two more Mariner flyby were launched and sent back 57 images. • Mariner 9 in 1971 sent 7,000 images which sketched a more detailed image of Mars.
Developing of Mars image • Now the Phoenix mission with complicate arm, scoop, imagers, and analyzers, bring us more specify image of Mars and improve human’s knowledge about space especially Mars, the god of wars. Picture taken from http://ngm.nationalgeographic.com/2008/12/planet-mars/updike-text