火星介绍 英语ppt

1、xxx 201x.x.x question what are the names of the eight planets of the solar systerm? mercury 水星水星 venus 金星金星 earth 地球地球 mars 火星火星 jupiter 木星木星 saturn 土星土星 uranus 天王星天王星 neptune 海王星海王星 mars mars is the fourth planet from the sun in the solar system. mars is named for the roman god of war, presumably b

2、ecause of its distinctly reddish color. mars mars equatorial radius ：3397.2km quality：6.42191023 kg equatorial radius ：6372.8km quality：5.981024 kg mars diameter is only about half and its mass about one-tenth the earths. mars has polar ice caps and clouds in its atmosphere, seasonal weather pattern

3、s, volcanoes, canyons and other recognizable features. however, conditions on mars vary wildly from what we know on our own planet. mars volcano on mars spring of mars life on mars? among our discoveries about mars, one stands out above all others: the possible presence of liquid water on mars, eith

4、er in its ancient past or preserved in the subsurface today. water is key because almost everywhere we find water on earth, we find life. pictures of channels probably carved by running water on mars life on mars? colour view of crater with water ice mars exploration “spirit” mars probe （勇气号）（勇气号） time of launch: 2003. 6.10 time of landing: 2004. 1. 4 “opportunity” mars probe （机遇号）（机遇号） time of launch: 2003. 7. 7 time of landing: 2004.1.25 nasa：美国宇航局：美国宇航局 mars exploration “curiosity” mars probe （好奇号）（好奇号） time of launch: