The great lakes formed early Mars or the impact of future missions by snowmelt (video)

The great lakes formed early Mars or the impact of future missions [NASA] Science ancient Mars ocean how much snow melt? In September 19, Beijing science and technology daily (reporter Liu Xia) according to the U.S. "Christian Science Monitor" reported on 17, the U.S. National Aeronautics and Space Administration (NASA) researchers at the jet propulsion laboratory recently pointed out, they found a few similar to the five great lakes large lake sites on Mars, the melting snow formed in 2 billion 3 billion years ago, the emergence of liquid water on the surface of Mars time later than previously thought. The latest study is expected to re write the history of the red planet, affecting the future of Mars research and exploration missions. Shannon · Wilson led the team in the Mars Global Surveyor NASA number (MGS), the Mars Reconnaissance Orbiter (MRO) and the European Mars Express of Mars taken photos in the highlands of Arabia area, found evidence for the existence of valleys and Lake volcano on mars. By calculating the number of volcanic lakes in different regions of the photo, the team drew the timeline and determined that the wet period occurred about 2 billion to 3 billion years ago. Scientists had previously thought that the "warm, wet" period of Mars had been over for a long time. Wilson said in a statement: "we found that the water flow into Lake Valley; there are several Lake overflow, which indicates that the local time with plenty of water. A lake with the largest North American lake Too vast lake (1897 meters above sea level, 35 kilometers long from north to south, east-west width of 19 km) comparable; more than an "heart lake" lake water than in Lake ontario." Scientists initially thought the water on Mars there for a short time and is mainly the groundwater, but since MGS arrived at Mars in about 20 years ago, more and more scientists believe that Mars has a lot of ground water and continue to exist for a long time. In 2015, scientists discovered other evidence of the existence of lakes on Mars, the new study not only confirms this conclusion, and added new evidence. The MRO project scientist Ricky · Zurek said: "the latest research shows that Mars appears longer than previously thought a few billion years late. There are signs that the water in the snow melts in spring." Although people are still not sure why the snow melts, but there is a theory that the "behind the scenes" is the extreme changes in the Martian slope. Perhaps most important of all, this finding suggests that microbial life is likely to occur on Mars later than previously thought, which could have implications for future research and exploration missions.相关的主题文章: