格子女77
Mars is the fourth planet from the Sun in the Solar System. The planet is named after Mars, the Roman god of war. It is also referred to as the "Red Planet" because of its reddish appearance, due to iron oxide[6] prevalent on its surface. Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the volcanoes, valleys, deserts and polar ice caps of Earth. Unlike the Earth, Mars is now a geologically inactive planet with no known tectonic activity. It is the site of Olympus Mons, the highest known mountain in the Solar System, and of Valles Marineris, the largest canyon. The smooth Borealis basin in the northern hemisphere may be a giant impact feature covering 40% of the planet.[7][8] Mars’ rotational period and seasonal cycles are likewise similar to those of Earth.Until the first flyby of Mars by Mariner 4 in 1965, many speculated that there might be liquid water on the planet's surface. This was based on observed periodic variations in light and dark patches, particularly in the polar latitudes, which looked like seas and continents, while long, dark striations were interpreted by some as irrigation channels for liquid water. These straight line features were later explained as optical illusions. Still, of all the planets in the Solar System other than Earth, Mars is the most likely to harbor liquid water, and thus may contain life.[9] Geological evidence gathered by unmanned missions suggests that Mars once had large-scale water coverage on its surface, while small geyser-like water flows may have occurred during the past decade.[10] In 2005, radar data revealed the presence of large quantities of water ice at the poles[11] and at mid-latitudes (November 2008).[12] The Phoenix Mars Lander directly sampled water ice in shallow martian soil on July 31, 2008.[13]Mars has two moons, Phobos and Deimos, which are small and irregularly shaped. These may be captured asteroids, similar to 5261 Eureka, a Martian Trojan asteroid. Mars can be seen from Earth with the naked eye. Its apparent magnitude reaches −2.91,[5] a brightness surpassed only by Venus, the Moon, and the Sun, although most of the time Jupiter will appear brighter to the naked eye than Mars. Mars has an average opposition distance of 78 million km but can come as close as 55.7 million km during a close approach, such as occurred in 2003.[5]Mars is currently host to three functional orbiting spacecraft: Mars Odyssey, Mars Express, and the Mars Reconnaissance Orbiter. On the surface are the two Mars Exploration Rovers (Spirit and Opportunity) and several inert landers and rovers, both successful and unsuccessful. The Phoenix lander completed its mission on the surface in 2008. Observations by NASA's now-defunct Mars Global Surveyor show evidence that parts of the southern polar ice cap have been receding
最爱的mango
Mars is the fourth planet from the Sun in the Solar System. Named after the Roman god of war, Mars, it is often described as the "Red Planet" as the iron oxide prevalent on its surface gives it a reddish appearance.[13] Mars is a terrestrial planet with a thin atmosphere, having surface features reminiscent both of the impact craters of the Moon and the volcanoes, valleys, deserts, and polar ice caps of Earth. The rotational period and seasonal cycles of Mars are likewise similar to those of Earth, as is the tilt that produces the seasons. Mars is the site of Olympus Mons, the highest known mountain within the Solar System, and of Valles Marineris, the largest canyon. The smooth Borealis basin in the northern hemisphere covers 40% of the planet and may be a giant impact feature.[14][15]
Until the first successful flyby of Mars occurred in 1965, by Mariner 4, many speculated about the presence of liquid water on the planet's surface. This was based on observed periodic variations in light and dark patches, particularly in the polar latitudes, which appeared to be seas and continents; long, dark striations were interpreted by some as irrigation channels for liquid water. These straight line features were later explained as optical illusions, though geological evidence gathered by unmanned missions suggest that Mars once had large-scale water coverage on its surface.[16] In 2005, radar data revealed the presence of large quantities of water ice at the poles,[17] and at mid-latitudes.[18][19] The Mars rover Spirit sampled chemical compounds containing water molecules in March 2007. The Phoenix lander directly sampled water ice in shallow Martian soil on July 31, 2008.[20]
Mars has two moons, Phobos and Deimos, which are small and irregularly shaped. These may be captured asteroids, similar to 5261 Eureka, a Martian trojan asteroid. Mars is currently host to three functional orbiting spacecraft: Mars Odyssey, Mars Express, and the Mars Reconnaissance Orbiter, and one on the surface, the Mars Exploration Rover Opportunity. Defunct spacecraft on the surface include MER-A Spirit, and several other inert landers and rovers, both successful and unsuccessful such as the Phoenix lander, which completed its mission in 2008. Observations by NASA's now-defunct Mars Global Surveyor show evidence that parts of the southern polar ice cap have been receding.[21] Observations by the Mars Reconnaissance Orbiter have revealed possible flowing water during the warmest months on Mars
Mars can easily be seen from Earth with the naked eye. Its apparent magnitude reaches −3.0.a brightness surpassed only by Jupiter, Venus, the Moon, and the Sun. Optical ground based telescopes are typically limited to resolving features about 300 km (186 miles) across when Earth and Mars are closest, because of Earth's atmosphere.
爱美食的飘飘
Mars;spark；meteor；FireStar
关于“火星”短语如下：
火星报：Iskra ; HcKpa
火星蚁：Martialis heureka
火星一号：Mars One ; nibiru
火星极冠：Martian polar ice caps ; cap of mars
火星冰川：Mars Glacier
火星气候：Climate of Mars
火星生活：Life on Mars
火星公主：A Princess of Mars ; ALDNOAH
扩展资料：
火星自转轴倾角为25.19度，和地球的相近，因此也有四季，只是季节长度约为两倍。由于火星轨道离心率大约为0.093（地球只有0.017），使各季节长度不一致，又因远日点接近北半球夏至，北半球春夏比秋冬各长约40天。2009年10月26日为北半球春分，2010年5月13日为夏至，北半球处春季。
参考资料来源：百度百科-火星
雪後Sunny
火星英语是中国首家提供升值口语的培训机构，强调以国际职场为背景的，学以致用为目的，所教内容均和国际职场密切相关，紧紧围绕培养职场综合能力，让学员迅速提高在全英语环境下的国际职场能力。
ESP教学理论最适合培训18周岁以上的成年人，强调以国际职场为背景的，学以致用为目的，所教内容均和国际职场密切相关，紧紧围绕培养职场综合能力，让学员迅速提高在全英语环境下的国际职场能力。
扩展资料：
教学中心坐落在上海最繁华的中心地标：人民广场、浦东八佰伴、徐家汇三大专业教学中心，以及苏州观前街中心，都以交通便利，出行便捷为本。
已有逾千名学员就读于“MARSENGLISH-火星英语”，火星英语还将进一步在上海开出更多的教学中心，以更便捷、更专业、更有效、更具性价比的专业课程来满足更多的来自职业白领，对国际化英语学习的需求。
优质英语培训问答知识库
